[Qgis-us-user] New to QGIS and Spatial analysis

Preamble:

···
  1. I’ve been unsuccessfully searching for answers online for several days
  2. I am new to spatial analysis and GIS, and therefore trying to figure out what it can and cannot do

Question:

I recently installed QGIS in the hopes it can help me create satellite image files from a shape file consisting of points. I want to automatically define an area (for instance 1 square mile) around each point and save the Google satellite image of each of the 1-square mile areas. Is this possible in QGIS?

Thanks

Mike Seskin | EQL
Office: (858) 694-1851 | Cell: (442) 245-1779
Email: seskin_michael_x@solarturbines.com
Solar Turbines Incorporated

Caterpillar: Confidential Green

Hi Mike,

Question: I recently installed QGIS in the hopes it can help me create satellite image files from a shape file consisting of points. I want to automatically define an area (for instance 1 square mile) around each point and save the Google satellite image of each of the 1-square mile areas. Is this possible in QGIS?
It sounds that you have loaded Google Arial "satellite’ Imagery (a RGB image likely as a background layer) and would want to create a a clipped version of that image and save locally . Does that sound correct ?

Overall the answer is yes - QGIS can be used to do this.

The usual way QGIS works is with local files. So ion case you have a local raster (imagery aka a raster file as *.tif e.g. you can use that to clip it using the QGIS tool.
In your case you might have an online resource and one way to get that clipped is to first save a local copy and then clip the local raster. You can use the Processing tool box for this

In the Processing Toolbox search box type in

1.) Convert Map to Raster.
save the background image a geotif ( see see more info here https://www.giscourse.com/how-to-download-google-maps-orthophoto-data-on-your-computer-using-qgis/ )

2.) use a buffer tool to create a shape for the clip feature .e.g.
use “Rectangles, ovals, diamonds”

3.) use the “clip” tool to clip the raster with the cerate in step 2

Such processes can be automated, if interested to hear about that just ask

Cheers
Karsten

Hi Karsten – thank you VERY much for this help!

Yes, a couple of follow-up questions if you don’t mind…is there a way to automatically define a 1 square mile extent around each point in my shape file? And then can I run the “convert map to raster” tool automatically on each area. So for instance if I have a shape file with 10 points layered on Google satellite, can I use the “convert map to raster” to automatically create 10 satellite image files?

Thanks again for any help!

···

Mike Seskin | EQL
Office: (858) 694-1851 | Cell: (442) 245-1779
Email: seskin_michael_x@solarturbines.com
Solar Turbines Incorporated

Caterpillar: Confidential Green

From: karsten karsten@terragis.net
Sent: Monday, March 14, 2022 7:48 PM
To: Mike Seskin Seskin_Michael_X@solarturbines.com; qgis-us-user@lists.osgeo.org
Subject: RE: [Qgis-us-user] New to QGIS and Spatial analysis




CAUTION: EXTERNAL EMAIL
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Hi Mike,

Question: I recently installed QGIS in the hopes it can help me create satellite image files from a shape file consisting of points. I want to automatically define an area (for instance 1 square mile) around each point and save the Google satellite image of each of the 1-square mile areas. Is this possible in QGIS?

It sounds that you have loaded Google Arial "satellite’ Imagery (a RGB image likely as a background layer) and would want to create a a clipped version of that image and save locally . Does that sound correct ?

Overall the answer is yes - QGIS can be used to do this.

The usual way QGIS works is with local files. So ion case you have a local raster (imagery aka a raster file as *.tif e.g. you can use that to clip it using the QGIS tool.

In your case you might have an online resource and one way to get that clipped is to first save a local copy and then clip the local raster. You can use the Processing tool box for this

In the Processing Toolbox search box type in

1.) Convert Map to Raster.

save the background image a geotif ( see see more info here https://www.giscourse.com/how-to-download-google-maps-orthophoto-data-on-your-computer-using-qgis/ )

2.) use a buffer tool to create a shape for the clip feature .e.g.

use “Rectangles, ovals, diamonds”

3.) use the “clip” tool to clip the raster with the cerate in step 2

Such processes can be automated, if interested to hear about that just ask

Cheers

Karsten

Hi Michael,

Yes, a couple of follow-up questions if you don’t mind…is there a way to automatically define a 1 square mile extent around each point in my shape file?
You could do that in multiple ways.
Possibly the easiest would be if you just used a circular buffer around each point and then calculated back from the circle area you would want the buffer to contain using the a mathematical circle area calc. Such as 1km² = π * r² → resolve by r. You could also use miles . However keep in mind that this exact area will depend on the map projection and associated map units used. So if your map projection units are in meters you will need to use those for the the conversion-
However with naturally more difficult to use units (such as feet and miles) a conversion is necessary anyways :slight_smile:

So overall using the circular buffer radius would give you potential cut shape. Now the problem is that raster (not really) can be cut by circular shapes (well it works kind of visually at least), but a raster is rectangular feature, however can contain NULL values for values outside a cut line.
Another way would be to calculate the edge points of a 1mi² square that you then create around the point as a center - it could e.g. involve a python script that you can use with the python console in QGIS …
e.g. https://www.qgistutorials.com/en/docs/processing_python_scripts.html
Maybe there is a ready made tool out there where someone has done something similar that can be reused, but so far I am not ware of one …
Now there is also an option to sue a buffer with miter join style to create a rectangular buffer . Here I am not sure what the buffer distance exactly would be maybe try it out to get to 1mi² but you can do trial runs to get near that desired area size
https://gis.stackexchange.com/questions/277306/creating-square-buffer-in-qgis

And then can I run the “convert map to raster” tool automatically on each area. So for instance if I have a shape file with 10 points layered on Google satellite, can I use the “convert map to raster” to automatically create 10 satellite image files?
You can do that and it would involve the Model designer in QGIS. You can create a model for reuse and add that to the processing tools …
e.g. see https://docs.qgis.org/3.22/en/docs/user_manual/processing/modeler.html?highlight=model%20designer
and here https://www.youtube.com/watch?v=eZb5VLTc9-o.

actually when I think about it - it seems that you really can just use the Model designer
and use the 3 step in there I initially mentioned - that should work because using the
“Rectangles, ovals, diamonds” tool you indeed can already create the 1mi² buffer …

Karsten


From: Qgis-us-user [mailto:qgis-us-user-bounces@lists.osgeo.org] On Behalf Of karsten
Sent: Monday, March 14, 2022 22:38
To: ‘Mike Seskin’; qgis-us-user@lists.osgeo.org
Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis

Hi Michael,

Yes, a couple of follow-up questions if you don’t mind…is there a way to automatically define a 1 square mile extent around each point in my shape file?
You could do that in multiple ways.
Possibly the easiest would be if you just used a circular buffer around each point and then calculated back from the circle area you would want the buffer to contain using the a mathematical circle area calc. Such as 1km² = π * r² → resolve by r. You could also use miles . However keep in mind that this exact area will depend on the map projection and associated map units used. So if your map projection units are in meters you will need to use those for the the conversion-
However with naturally more difficult to use units (such as feet and miles) a conversion is necessary anyways :slight_smile:

So overall using the circular buffer radius would give you potential cut shape. Now the problem is that raster (not really) can be cut by circular shapes (well it works kind of visually at least), but a raster is rectangular feature, however can contain NULL values for values outside a cut line.
Another way would be to calculate the edge points of a 1mi² square that you then create around the point as a center - it could e.g. involve a python script that you can use with the python console in QGIS …
e.g. https://www.qgistutorials.com/en/docs/processing_python_scripts.html
Maybe there is a ready made tool out there where someone has done something similar that can be reused, but so far I am not ware of one …
Now there is also an option to sue a buffer with miter join style to create a rectangular buffer . Here I am not sure what the buffer distance exactly would be maybe try it out to get to 1mi² but you can do trial runs to get near that desired area size
https://gis.stackexchange.com/questions/277306/creating-square-buffer-in-qgis

And then can I run the “convert map to raster” tool automatically on each area. So for instance if I have a shape file with 10 points layered on Google satellite, can I use the “convert map to raster” to automatically create 10 satellite image files?
You can do that and it would involve the Model designer in QGIS. You can create a model for reuse and add that to the processing tools …
e.g. see https://docs.qgis.org/3.22/en/docs/user_manual/processing/modeler.html?highlight=model%20designer
and here https://www.youtube.com/watch?v=eZb5VLTc9-o.

Hey Mike - Welcome to the list.

So the short answer is yes and the longer answer is Yes it’s a little complicated but doable.

For the explanation I’'m going to completely ignore projections - that’s a whole other discussion.

If you had a point (like a tower) you could run the buffer tool and buffer it one mile. From there I think you would “clip by mask layer” and extract the image. You could save that as a geotiff or whatever you needed. Life would be good. (I say all that like you know where the tools are - look for processing at the top of QGIS - that gives you processing tools).

The bigger problem is the imagery - you can’t clip Google Satellite imagery and use that per the license from Google. So you would need another image source be it landsat or something local (maybe the county you’re working in has imagery they would share). Imagery is a pain.

Really - that’s the kicker - the imagery. Get that and then there’s the whole discussion on “get it in a local projection” and you’re done - it’s about three steps in QGIS to get what you want.

It’s completely doable! I dunno how much this has helped but you’re on the right track.

Commands:

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#qgisbuffer

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/gdal/rasterextraction.html#gdalcliprasterbymasklayer

Yell if you need anything!

Randy

On Monday, March 14, 2022 7:10:56 PM EDT Mike Seskin wrote:

Preamble:

  1. I’ve been unsuccessfully searching for answers online for several days
  1. I am new to spatial analysis and GIS, and therefore trying to figure out what it can and

cannot do

Question:

I recently installed QGIS in the hopes it can help me create satellite image files from a shape

file consisting of points. I want to automatically define an area (for instance 1 square mile)

around each point and save the Google satellite image of each of the 1-square mile areas. Is

this possible in QGIS?

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com

Solar Turbines Incorporated

Caterpillar: Confidential Green


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com

(p) 423.653.3611

(e) rjhale@northrivergeographic.com

Hi karsten – thanks again for all these tips, the graphical modeler tutorial was an excellent “discovery”!!

···

Mike Seskin | EQL
Office: (858) 694-1851 | Cell: (442) 245-1779
Email: seskin_michael_x@solarturbines.com
Solar Turbines Incorporated

Caterpillar: Confidential Green

From: karsten karsten@terragis.net
Sent: Monday, March 14, 2022 10:43 PM
To: ‘karsten’ karsten@terragis.net; Mike Seskin Seskin_Michael_X@solarturbines.com; qgis-us-user@lists.osgeo.org
Subject: RE: [Qgis-us-user] New to QGIS and Spatial analysis




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actually when I think about it - it seems that you really can just use the Model designer
and use the 3 step in there I initially mentioned - that should work because using the

“Rectangles, ovals, diamonds” tool you indeed can already create the 1mi² buffer …

Karsten


From: Qgis-us-user [mailto:qgis-us-user-bounces@lists.osgeo.org] On Behalf Of karsten
Sent: Monday, March 14, 2022 22:38
To: ‘Mike Seskin’; qgis-us-user@lists.osgeo.org
Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis

Hi Michael,

Yes, a couple of follow-up questions if you don’t mind…is there a way to automatically define a 1 square mile extent around each point in my shape file?

You could do that in multiple ways.
Possibly the easiest would be if you just used a circular buffer around each point and then calculated back from the circle area you would want the buffer to contain using the a mathematical circle area calc. Such as 1km² = π * r² → resolve by r. You could also use miles . However keep in mind that this exact area will depend on the map projection and associated map units used. So if your map projection units are in meters you will need to use those for the the conversion-

However with naturally more difficult to use units (such as feet and miles) a conversion is necessary anyways :slight_smile:

So overall using the circular buffer radius would give you potential cut shape. Now the problem is that raster (not really) can be cut by circular shapes (well it works kind of visually at least), but a raster is rectangular feature, however can contain NULL values for values outside a cut line.

Another way would be to calculate the edge points of a 1mi² square that you then create around the point as a center - it could e.g. involve a python script that you can use with the python console in QGIS …

e.g. https://www.qgistutorials.com/en/docs/processing_python_scripts.html

Maybe there is a ready made tool out there where someone has done something similar that can be reused, but so far I am not ware of one …

Now there is also an option to sue a buffer with miter join style to create a rectangular buffer . Here I am not sure what the buffer distance exactly would be maybe try it out to get to 1mi² but you can do trial runs to get near that desired area size
https://gis.stackexchange.com/questions/277306/creating-square-buffer-in-qgis

And then can I run the “convert map to raster” tool automatically on each area. So for instance if I have a shape file with 10 points layered on Google satellite, can I use the “convert map to raster” to automatically create 10 satellite image files?
You can do that and it would involve the Model designer in QGIS. You can create a model for reuse and add that to the processing tools …
e.g. see https://docs.qgis.org/3.22/en/docs/user_manual/processing/modeler.html?highlight=model%20designer
and here https://www.youtube.com/watch?v=eZb5VLTc9-o.

Cheers

Karsten

Hi Randal – thanks very much for this high level overview, it’s incredibly helpful for a beginner like me!

I took some excellent earlier direction from Karsten who pointed me towards a solution using the graphical modeler – it seemed perfect until I ran it and encountered some inexplicable error with the Google satellite raster – that is until I read your reply, and now it makes sense! What a bummer about the licensing – as you said the imagery is the kicker!

Are my following imagery options correct?

···
  1. Purchase a license from Google
  2. Use landstat for free

Thanks

Mike Seskin | EQL
Office: (858) 694-1851 | Cell: (442) 245-1779
Email: seskin_michael_x@solarturbines.com
Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale rjhale@northrivergeographic.com
Sent: Tuesday, March 15, 2022 6:53 AM
To: qgis-us-user@lists.osgeo.org; Mike Seskin Seskin_Michael_X@solarturbines.com
Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis




CAUTION: EXTERNAL EMAIL
This is a message from rjhale@northrivergeographic.com.
Use caution when opening unexpected emails and do not click on links or attachments from unknown senders.
For more resources, visit security.cat.com/phishing.


Hey Mike - Welcome to the list.

So the short answer is yes and the longer answer is Yes it’s a little complicated but doable.

For the explanation I’'m going to completely ignore projections - that’s a whole other discussion.

If you had a point (like a tower) you could run the buffer tool and buffer it one mile. From there I think you would “clip by mask layer” and extract the image. You could save that as a geotiff or whatever you needed. Life would be good. (I say all that like you know where the tools are - look for processing at the top of QGIS - that gives you processing tools).

The bigger problem is the imagery - you can’t clip Google Satellite imagery and use that per the license from Google. So you would need another image source be it landsat or something local (maybe the county you’re working in has imagery they would share). Imagery is a pain.

Really - that’s the kicker - the imagery. Get that and then there’s the whole discussion on “get it in a local projection” and you’re done - it’s about three steps in QGIS to get what you want.

It’s completely doable! I dunno how much this has helped but you’re on the right track.

Commands:

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#qgisbuffer

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/gdal/rasterextraction.html#gdalcliprasterbymasklayer

Yell if you need anything!

Randy

On Monday, March 14, 2022 7:10:56 PM EDT Mike Seskin wrote:

Preamble:

  1. I’ve been unsuccessfully searching for answers online for several days
  1. I am new to spatial analysis and GIS, and therefore trying to figure out what it can and

cannot do

Question:

I recently installed QGIS in the hopes it can help me create satellite image files from a shape

file consisting of points. I want to automatically define an area (for instance 1 square mile)

around each point and save the Google satellite image of each of the 1-square mile areas. Is

this possible in QGIS?

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com

Solar Turbines Incorporated

Caterpillar: Confidential Green


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com

(p) 423.653.3611

(e) rjhale@northrivergeographic.com

That’s awesome.

Google imagery (assuming you’re using QuickMapServices) is pushed through a service and I think those services are usually pretty locked down with licensing plus it’s a service so it’s just harder to deal with.

So I think you can purchase Google imagery - not sure of the cost.

Depending on where you are and what you’re doing here’s what I would do:

  1. Check with the local City/County and see if they have imagery. It will be probably 6 inch to 1 foot in resolution. There may be a charge or it may be free. Example: Hamilton County TN has an image service that QGIS can use and they sell imagery.

  2. Check with the state you are in and see what they have. I would search for “State of Mike GIS Data” (with Mike being the state you’re in) and see what pops up. Example: The state has an imagery service and they sell imagery to the general public and to counties. Go back to 1 and they (county) may give you what they purchased. Tn has free LIDAR data for download also.

  3. Federal is the next step - NAIP (1 meter). That’s free and may be awesome for what you want or may not be. https://www.fsa.usda.gov/programs-and-services/aerial-photography/imagery-programs/naip-imagery/

  4. Weird use cases that may have imagery in the area - like some utilities will fly their own imagery and have that available if you ask nice (I was a former Federal Utility Employee in Tennessee which had some gas turbines).

  5. Landsat will completely work but I think that may still be 30 meter pixel size - but it’s free. There are some other satellite imagery that is free also - you’re just trading resolution for cost.

  6. Planet labs sells imagery - but not sure of the cost on that on either.

Yeah - that’s the hard part - imagery. Software is easy - imagery makes my head hurt.

Randy

On Tuesday, March 15, 2022 10:10:35 AM EDT Mike Seskin wrote:

Hi Randal - thanks very much for this high level overview, it’s incredibly helpful for a beginner

like me!

I took some excellent earlier direction from Karsten who pointed me towards a solution using the

graphical modeler - it seemed perfect until I ran it and encountered some inexplicable error with

the Google satellite raster - that is until I read your reply, and now it makes sense! What a

bummer about the licensing – as you said the imagery is the kicker!

Are my following imagery options correct?

  1. Purchase a license from Google
  1. Use landstat for free

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com

Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale rjhale@northrivergeographic.com

Sent: Tuesday, March 15, 2022 6:53 AM

To: qgis-us-user@lists.osgeo.org; Mike Seskin Seskin_Michael_X@solarturbines.com

Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis


CAUTION: EXTERNAL EMAIL

This is a message from rjhale@northrivergeographic.commailto:rjhale@northrivergeographic.com.

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senders. For more resources, visit security.cat.com/phishing.


Hey Mike - Welcome to the list.

So the short answer is yes and the longer answer is Yes it’s a little complicated but doable.

For the explanation I’'m going to completely ignore projections - that’s a whole other discussion.

If you had a point (like a tower) you could run the buffer tool and buffer it one mile. From there

I think you would “clip by mask layer” and extract the image. You could save that as a geotiff or

whatever you needed. Life would be good. (I say all that like you know where the tools are - look

for processing at the top of QGIS - that gives you processing tools).

The bigger problem is the imagery - you can’t clip Google Satellite imagery and use that per the

license from Google. So you would need another image source be it landsat or something local

(maybe the county you’re working in has imagery they would share). Imagery is a pain.

Really - that’s the kicker - the imagery. Get that and then there’s the whole discussion on "get

it in a local projection" and you’re done - it’s about three steps in QGIS to get what you want.

It’s completely doable! I dunno how much this has helped but you’re on the right track.

Commands:

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#qgisbuf

fer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/processing_algs/q

gis/vectorgeometry.html*qgisbuffer__;Iw!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6N

jHwqzsxp1QIcIxEKimYAZTIwRUeetxWcrE$>

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/gdal/rasterextraction.html#gdalc

liprasterbymasklayer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/

processing_algs/gdal/rasterextraction.html*gdalcliprasterbymasklayer__;Iw!!M7dyoZOwuwF45AU!kH6lFpU

w2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUez1pQDmU$>

Yell if you need anything!

Randy

On Monday, March 14, 2022 7:10:56 PM EDT Mike Seskin wrote:

Preamble:

  1. I’ve been unsuccessfully searching for answers online for several days
  1. I am new to spatial analysis and GIS, and therefore trying to figure out what it can and

cannot do

Question:

I recently installed QGIS in the hopes it can help me create satellite image files from a shape

file consisting of points. I want to automatically define an area (for instance 1 square mile)

around each point and save the Google satellite image of each of the 1-square mile areas. Is

this possible in QGIS?

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.commailto:seskin_michael_x@solarturbines.com

Solar Turbines Incorporated

Caterpillar: Confidential Green


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com<https://urldefense.com/v3/__https:/www.northrivergeographic.c

om__;!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUexeg9u2g

$>

(p) 423.653.3611

(e) rjhale@northrivergeographic.commailto:rjhale@northrivergeographic.com


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com

(p) 423.653.3611

(e) rjhale@northrivergeographic.com

Randy / Doug

Thanks for all the great info on imagery sources. Ironically (Randy) you mentioned gas turbines, which happens to be connected to my whole reason for investigating GIS. Therefore my imagery requirements are global since our engines our scattered throughout the world. I’ll investigate some of the sources you provided, excluding the localized ones.

···

Mike Seskin | EQL
Office: (858) 694-1851 | Cell: (442) 245-1779
Email: seskin_michael_x@solarturbines.com
Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale rjhale@northrivergeographic.com
Sent: Tuesday, March 15, 2022 8:10 AM
To: qgis-us-user@lists.osgeo.org; Mike Seskin Seskin_Michael_X@solarturbines.com
Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis




CAUTION: EXTERNAL EMAIL
This is a message from rjhale@northrivergeographic.com.
Use caution when opening unexpected emails and do not click on links or attachments from unknown senders.
For more resources, visit security.cat.com/phishing.


That’s awesome.

Google imagery (assuming you’re using QuickMapServices) is pushed through a service and I think those services are usually pretty locked down with licensing plus it’s a service so it’s just harder to deal with.

So I think you can purchase Google imagery - not sure of the cost.

Depending on where you are and what you’re doing here’s what I would do:

  1. Check with the local City/County and see if they have imagery. It will be probably 6 inch to 1 foot in resolution. There may be a charge or it may be free. Example: Hamilton County TN has an image service that QGIS can use and they sell imagery.

  2. Check with the state you are in and see what they have. I would search for “State of Mike GIS Data” (with Mike being the state you’re in) and see what pops up. Example: The state has an imagery service and they sell imagery to the general public and to counties. Go back to 1 and they (county) may give you what they purchased. Tn has free LIDAR data for download also.

  3. Federal is the next step - NAIP (1 meter). That’s free and may be awesome for what you want or may not be. https://www.fsa.usda.gov/programs-and-services/aerial-photography/imagery-programs/naip-imagery/

  4. Weird use cases that may have imagery in the area - like some utilities will fly their own imagery and have that available if you ask nice (I was a former Federal Utility Employee in Tennessee which had some gas turbines).

  5. Landsat will completely work but I think that may still be 30 meter pixel size - but it’s free. There are some other satellite imagery that is free also - you’re just trading resolution for cost.

  6. Planet labs sells imagery - but not sure of the cost on that on either.

Yeah - that’s the hard part - imagery. Software is easy - imagery makes my head hurt.

Randy

On Tuesday, March 15, 2022 10:10:35 AM EDT Mike Seskin wrote:

Hi Randal - thanks very much for this high level overview, it’s incredibly helpful for a beginner

like me!

I took some excellent earlier direction from Karsten who pointed me towards a solution using the

graphical modeler - it seemed perfect until I ran it and encountered some inexplicable error with

the Google satellite raster - that is until I read your reply, and now it makes sense! What a

bummer about the licensing – as you said the imagery is the kicker!

Are my following imagery options correct?

  1. Purchase a license from Google
  1. Use landstat for free

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com

Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale <rjhale@northrivergeographic.com>

Sent: Tuesday, March 15, 2022 6:53 AM

To: qgis-us-user@lists.osgeo.org; Mike Seskin <Seskin_Michael_X@solarturbines.com>

Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis


CAUTION: EXTERNAL EMAIL

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Hey Mike - Welcome to the list.

So the short answer is yes and the longer answer is Yes it’s a little complicated but doable.

For the explanation I’'m going to completely ignore projections - that’s a whole other discussion.

If you had a point (like a tower) you could run the buffer tool and buffer it one mile. From there

I think you would “clip by mask layer” and extract the image. You could save that as a geotiff or

whatever you needed. Life would be good. (I say all that like you know where the tools are - look

for processing at the top of QGIS - that gives you processing tools).

The bigger problem is the imagery - you can’t clip Google Satellite imagery and use that per the

license from Google. So you would need another image source be it landsat or something local

(maybe the county you’re working in has imagery they would share). Imagery is a pain.

Really - that’s the kicker - the imagery. Get that and then there’s the whole discussion on "get

it in a local projection" and you’re done - it’s about three steps in QGIS to get what you want.

It’s completely doable! I dunno how much this has helped but you’re on the right track.

Commands:

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#qgisbuf

fer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/processing_algs/q

gis/vectorgeometry.html*qgisbuffer__;Iw!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6N

jHwqzsxp1QIcIxEKimYAZTIwRUeetxWcrE$>

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/gdal/rasterextraction.html#gdalc

liprasterbymasklayer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/

processing_algs/gdal/rasterextraction.html*gdalcliprasterbymasklayer__;Iw!!M7dyoZOwuwF45AU!kH6lFpU

w2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUez1pQDmU$>

Yell if you need anything!

Randy

On Monday, March 14, 2022 7:10:56 PM EDT Mike Seskin wrote:

Preamble:

  1. I’ve been unsuccessfully searching for answers online for several days
  1. I am new to spatial analysis and GIS, and therefore trying to figure out what it can and

cannot do

Question:

I recently installed QGIS in the hopes it can help me create satellite image files from a shape

file consisting of points. I want to automatically define an area (for instance 1 square mile)

around each point and save the Google satellite image of each of the 1-square mile areas. Is

this possible in QGIS?

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com<mailto:seskin_michael_x@solarturbines.com%3E

Solar Turbines Incorporated

Caterpillar: Confidential Green


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com<https://urldefense.com/v3/__https:/www.northrivergeographic.c

om__;!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUexeg9u2g

$>

(p) 423.653.3611

(e) rjhale@northrivergeographic.com<mailto:rjhale@northrivergeographic.com%3E


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com

(p) 423.653.3611

(e) rjhale@northrivergeographic.com

Cool!

On Tue, Mar 15, 2022, 12:14 PM Mike Seskin <Seskin_Michael_X@solarturbines.com> wrote:

Randy / Doug

Thanks for all the great info on imagery sources. Ironically (Randy) you mentioned gas turbines, which happens to be connected to my whole reason for investigating GIS. Therefore my imagery requirements are global since our engines our scattered throughout the world. I’ll investigate some of the sources you provided, excluding the localized ones.

Mike Seskin | EQL
Office: (858) 694-1851 | Cell: (442) 245-1779
Email: seskin_michael_x@solarturbines.com
Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale <rjhale@northrivergeographic.com>
Sent: Tuesday, March 15, 2022 8:10 AM
To: qgis-us-user@lists.osgeo.org; Mike Seskin <Seskin_Michael_X@solarturbines.com>
Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis




CAUTION: EXTERNAL EMAIL
This is a message from rjhale@northrivergeographic.com.
Use caution when opening unexpected emails and do not click on links or attachments from unknown senders.
For more resources, visit security.cat.com/phishing.


That’s awesome.

Google imagery (assuming you’re using QuickMapServices) is pushed through a service and I think those services are usually pretty locked down with licensing plus it’s a service so it’s just harder to deal with.

So I think you can purchase Google imagery - not sure of the cost.

Depending on where you are and what you’re doing here’s what I would do:

  1. Check with the local City/County and see if they have imagery. It will be probably 6 inch to 1 foot in resolution. There may be a charge or it may be free. Example: Hamilton County TN has an image service that QGIS can use and they sell imagery.

  2. Check with the state you are in and see what they have. I would search for “State of Mike GIS Data” (with Mike being the state you’re in) and see what pops up. Example: The state has an imagery service and they sell imagery to the general public and to counties. Go back to 1 and they (county) may give you what they purchased. Tn has free LIDAR data for download also.

  3. Federal is the next step - NAIP (1 meter). That’s free and may be awesome for what you want or may not be. https://www.fsa.usda.gov/programs-and-services/aerial-photography/imagery-programs/naip-imagery/

  4. Weird use cases that may have imagery in the area - like some utilities will fly their own imagery and have that available if you ask nice (I was a former Federal Utility Employee in Tennessee which had some gas turbines).

  5. Landsat will completely work but I think that may still be 30 meter pixel size - but it’s free. There are some other satellite imagery that is free also - you’re just trading resolution for cost.

  6. Planet labs sells imagery - but not sure of the cost on that on either.

Yeah - that’s the hard part - imagery. Software is easy - imagery makes my head hurt.

Randy

On Tuesday, March 15, 2022 10:10:35 AM EDT Mike Seskin wrote:

Hi Randal - thanks very much for this high level overview, it’s incredibly helpful for a beginner

like me!

I took some excellent earlier direction from Karsten who pointed me towards a solution using the

graphical modeler - it seemed perfect until I ran it and encountered some inexplicable error with

the Google satellite raster - that is until I read your reply, and now it makes sense! What a

bummer about the licensing – as you said the imagery is the kicker!

Are my following imagery options correct?

  1. Purchase a license from Google
  1. Use landstat for free

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com

Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale <rjhale@northrivergeographic.com>

Sent: Tuesday, March 15, 2022 6:53 AM

To: qgis-us-user@lists.osgeo.org; Mike Seskin <Seskin_Michael_X@solarturbines.com>

Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis


CAUTION: EXTERNAL EMAIL

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Hey Mike - Welcome to the list.

So the short answer is yes and the longer answer is Yes it’s a little complicated but doable.

For the explanation I’'m going to completely ignore projections - that’s a whole other discussion.

If you had a point (like a tower) you could run the buffer tool and buffer it one mile. From there

I think you would “clip by mask layer” and extract the image. You could save that as a geotiff or

whatever you needed. Life would be good. (I say all that like you know where the tools are - look

for processing at the top of QGIS - that gives you processing tools).

The bigger problem is the imagery - you can’t clip Google Satellite imagery and use that per the

license from Google. So you would need another image source be it landsat or something local

(maybe the county you’re working in has imagery they would share). Imagery is a pain.

Really - that’s the kicker - the imagery. Get that and then there’s the whole discussion on "get

it in a local projection" and you’re done - it’s about three steps in QGIS to get what you want.

It’s completely doable! I dunno how much this has helped but you’re on the right track.

Commands:

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#qgisbuf

fer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/processing_algs/q

gis/vectorgeometry.html*qgisbuffer__;Iw!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6N

jHwqzsxp1QIcIxEKimYAZTIwRUeetxWcrE$>

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/gdal/rasterextraction.html#gdalc

liprasterbymasklayer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/

processing_algs/gdal/rasterextraction.html*gdalcliprasterbymasklayer__;Iw!!M7dyoZOwuwF45AU!kH6lFpU

w2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUez1pQDmU$>

Yell if you need anything!

Randy

On Monday, March 14, 2022 7:10:56 PM EDT Mike Seskin wrote:

Preamble:

  1. I’ve been unsuccessfully searching for answers online for several days
  1. I am new to spatial analysis and GIS, and therefore trying to figure out what it can and

cannot do

Question:

I recently installed QGIS in the hopes it can help me create satellite image files from a shape

file consisting of points. I want to automatically define an area (for instance 1 square mile)

around each point and save the Google satellite image of each of the 1-square mile areas. Is

this possible in QGIS?

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com<mailto:seskin_michael_x@solarturbines.com%3E

Solar Turbines Incorporated

Caterpillar: Confidential Green


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com<https://urldefense.com/v3/__https:/www.northrivergeographic.c

om__;!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUexeg9u2g

$>

(p) 423.653.3611

(e) rjhale@northrivergeographic.com<mailto:rjhale@northrivergeographic.com%3E


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com

(p) 423.653.3611

(e) rjhale@northrivergeographic.com

Since you are looking at local sites globally, it makes sense to use UTM projections in the zone specific to the location. That way, your buffers will be accurate globally. Sentinel 2 data might make sense for the imagery if 10m is high enough resolution.

On Tue, Mar 15, 2022, 12:14 PM Mike Seskin <Seskin_Michael_X@solarturbines.com> wrote:

Randy / Doug

Thanks for all the great info on imagery sources. Ironically (Randy) you mentioned gas turbines, which happens to be connected to my whole reason for investigating GIS. Therefore my imagery requirements are global since our engines our scattered throughout the world. I’ll investigate some of the sources you provided, excluding the localized ones.

Mike Seskin | EQL
Office: (858) 694-1851 | Cell: (442) 245-1779
Email: seskin_michael_x@solarturbines.com
Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale <rjhale@northrivergeographic.com>
Sent: Tuesday, March 15, 2022 8:10 AM
To: qgis-us-user@lists.osgeo.org; Mike Seskin <Seskin_Michael_X@solarturbines.com>
Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis




CAUTION: EXTERNAL EMAIL
This is a message from rjhale@northrivergeographic.com.
Use caution when opening unexpected emails and do not click on links or attachments from unknown senders.
For more resources, visit security.cat.com/phishing.


That’s awesome.

Google imagery (assuming you’re using QuickMapServices) is pushed through a service and I think those services are usually pretty locked down with licensing plus it’s a service so it’s just harder to deal with.

So I think you can purchase Google imagery - not sure of the cost.

Depending on where you are and what you’re doing here’s what I would do:

  1. Check with the local City/County and see if they have imagery. It will be probably 6 inch to 1 foot in resolution. There may be a charge or it may be free. Example: Hamilton County TN has an image service that QGIS can use and they sell imagery.

  2. Check with the state you are in and see what they have. I would search for “State of Mike GIS Data” (with Mike being the state you’re in) and see what pops up. Example: The state has an imagery service and they sell imagery to the general public and to counties. Go back to 1 and they (county) may give you what they purchased. Tn has free LIDAR data for download also.

  3. Federal is the next step - NAIP (1 meter). That’s free and may be awesome for what you want or may not be. https://www.fsa.usda.gov/programs-and-services/aerial-photography/imagery-programs/naip-imagery/

  4. Weird use cases that may have imagery in the area - like some utilities will fly their own imagery and have that available if you ask nice (I was a former Federal Utility Employee in Tennessee which had some gas turbines).

  5. Landsat will completely work but I think that may still be 30 meter pixel size - but it’s free. There are some other satellite imagery that is free also - you’re just trading resolution for cost.

  6. Planet labs sells imagery - but not sure of the cost on that on either.

Yeah - that’s the hard part - imagery. Software is easy - imagery makes my head hurt.

Randy

On Tuesday, March 15, 2022 10:10:35 AM EDT Mike Seskin wrote:

Hi Randal - thanks very much for this high level overview, it’s incredibly helpful for a beginner

like me!

I took some excellent earlier direction from Karsten who pointed me towards a solution using the

graphical modeler - it seemed perfect until I ran it and encountered some inexplicable error with

the Google satellite raster - that is until I read your reply, and now it makes sense! What a

bummer about the licensing – as you said the imagery is the kicker!

Are my following imagery options correct?

  1. Purchase a license from Google
  1. Use landstat for free

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com

Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale <rjhale@northrivergeographic.com>

Sent: Tuesday, March 15, 2022 6:53 AM

To: qgis-us-user@lists.osgeo.org; Mike Seskin <Seskin_Michael_X@solarturbines.com>

Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis


CAUTION: EXTERNAL EMAIL

This is a message from rjhale@northrivergeographic.com<mailto:rjhale@northrivergeographic.com%3E.

Use caution when opening unexpected emails and do not click on links or attachments from unknown

senders. For more resources, visit http://security.cat.com/phishing.


Hey Mike - Welcome to the list.

So the short answer is yes and the longer answer is Yes it’s a little complicated but doable.

For the explanation I’'m going to completely ignore projections - that’s a whole other discussion.

If you had a point (like a tower) you could run the buffer tool and buffer it one mile. From there

I think you would “clip by mask layer” and extract the image. You could save that as a geotiff or

whatever you needed. Life would be good. (I say all that like you know where the tools are - look

for processing at the top of QGIS - that gives you processing tools).

The bigger problem is the imagery - you can’t clip Google Satellite imagery and use that per the

license from Google. So you would need another image source be it landsat or something local

(maybe the county you’re working in has imagery they would share). Imagery is a pain.

Really - that’s the kicker - the imagery. Get that and then there’s the whole discussion on "get

it in a local projection" and you’re done - it’s about three steps in QGIS to get what you want.

It’s completely doable! I dunno how much this has helped but you’re on the right track.

Commands:

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#qgisbuf

fer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/processing_algs/q

gis/vectorgeometry.html*qgisbuffer__;Iw!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6N

jHwqzsxp1QIcIxEKimYAZTIwRUeetxWcrE$>

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/gdal/rasterextraction.html#gdalc

liprasterbymasklayer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/

processing_algs/gdal/rasterextraction.html*gdalcliprasterbymasklayer__;Iw!!M7dyoZOwuwF45AU!kH6lFpU

w2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUez1pQDmU$>

Yell if you need anything!

Randy

On Monday, March 14, 2022 7:10:56 PM EDT Mike Seskin wrote:

Preamble:

  1. I’ve been unsuccessfully searching for answers online for several days
  1. I am new to spatial analysis and GIS, and therefore trying to figure out what it can and

cannot do

Question:

I recently installed QGIS in the hopes it can help me create satellite image files from a shape

file consisting of points. I want to automatically define an area (for instance 1 square mile)

around each point and save the Google satellite image of each of the 1-square mile areas. Is

this possible in QGIS?

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com<mailto:seskin_michael_x@solarturbines.com%3E

Solar Turbines Incorporated

Caterpillar: Confidential Green


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com<https://urldefense.com/v3/__https:/www.northrivergeographic.c

om__;!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUexeg9u2g

$>

(p) 423.653.3611

(e) rjhale@northrivergeographic.com<mailto:rjhale@northrivergeographic.com%3E


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com

(p) 423.653.3611

(e) rjhale@northrivergeographic.com

Hey Mike,

if your requirements are global here are some pointers

  • NAIP is for us Agricultural lands only but a good source (USA only) there

  • Bing maps have a more permissive lic than Google you can find out what that includes

  • Regional and local coverage for imagers is spotty using local city/region etc services

  • Planet (labs) has great imagery but afaik they are not selling individual imagery of one point in time but a like an ongoing subscription mostly for mobile apps and web maps less for but would be good to find out exactly

  • If you are to do this more often as noted Landsat (and SPOT) imagery are sources, however have a resolution of 30 m,
    so Sentinel 2 imagery might be the better choice with global coverage (at up to 10m resolution) see here https://scihub.copernicus.eu/

  • If using satellite imagery for this you might want to learn the SCP plug-in that was created by Luca Congedo that can make false color images , correction and land cover analysis in QGIS see here with tutorials and all
    https://fromgistors.blogspot.com/p/semi-automatic-classification-plugin.html

Cheers
Karsten


From: Qgis-us-user [mailto:qgis-us-user-bounces@lists.osgeo.org] On Behalf Of Mike Seskin
Sent: Tuesday, March 15, 2022 09:15
To: Randal Hale; qgis-us-user@lists.osgeo.org; Doug Newcomb
Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis

Randy / Doug

Thanks for all the great info on imagery sources. Ironically (Randy) you mentioned gas turbines, which happens to be connected to my whole reason for investigating GIS. Therefore my imagery requirements are global since our engines our scattered throughout the world. I’ll investigate some of the sources you provided, excluding the localized ones.

Mike Seskin | EQL
Office: (858) 694-1851 | Cell: (442) 245-1779
Email: seskin_michael_x@solarturbines.com
Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale rjhale@northrivergeographic.com
Sent: Tuesday, March 15, 2022 8:10 AM
To: qgis-us-user@lists.osgeo.org; Mike Seskin Seskin_Michael_X@solarturbines.com
Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis




CAUTION: EXTERNAL EMAIL
This is a message from rjhale@northrivergeographic.com.
Use caution when opening unexpected emails and do not click on links or attachments from unknown senders.
For more resources, visit security.cat.com/phishing.


That’s awesome.

Google imagery (assuming you’re using QuickMapServices) is pushed through a service and I think those services are usually pretty locked down with licensing plus it’s a service so it’s just harder to deal with.

So I think you can purchase Google imagery - not sure of the cost.

Depending on where you are and what you’re doing here’s what I would do:

  1. Check with the local City/County and see if they have imagery. It will be probably 6 inch to 1 foot in resolution. There may be a charge or it may be free. Example: Hamilton County TN has an image service that QGIS can use and they sell imagery.

  2. Check with the state you are in and see what they have. I would search for “State of Mike GIS Data” (with Mike being the state you’re in) and see what pops up. Example: The state has an imagery service and they sell imagery to the general public and to counties. Go back to 1 and they (county) may give you what they purchased. Tn has free LIDAR data for download also.

  3. Federal is the next step - NAIP (1 meter). That’s free and may be awesome for what you want or may not be. https://www.fsa.usda.gov/programs-and-services/aerial-photography/imagery-programs/naip-imagery/

  4. Weird use cases that may have imagery in the area - like some utilities will fly their own imagery and have that available if you ask nice (I was a former Federal Utility Employee in Tennessee which had some gas turbines).

  5. Landsat will completely work but I think that may still be 30 meter pixel size - but it’s free. There are some other satellite imagery that is free also - you’re just trading resolution for cost.

  6. Planet labs sells imagery - but not sure of the cost on that on either.

Yeah - that’s the hard part - imagery. Software is easy - imagery makes my head hurt.

Randy

On Tuesday, March 15, 2022 10:10:35 AM EDT Mike Seskin wrote:

Hi Randal - thanks very much for this high level overview, it’s incredibly helpful for a beginner

like me!

I took some excellent earlier direction from Karsten who pointed me towards a solution using the

graphical modeler - it seemed perfect until I ran it and encountered some inexplicable error with

the Google satellite raster - that is until I read your reply, and now it makes sense! What a

bummer about the licensing – as you said the imagery is the kicker!

Are my following imagery options correct?

  1. Purchase a license from Google
  1. Use landstat for free

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com

Solar Turbines Incorporated

Caterpillar: Confidential Green

From: Randal Hale <rjhale@northrivergeographic.com>

Sent: Tuesday, March 15, 2022 6:53 AM

To: qgis-us-user@lists.osgeo.org; Mike Seskin <Seskin_Michael_X@solarturbines.com>

Subject: Re: [Qgis-us-user] New to QGIS and Spatial analysis


CAUTION: EXTERNAL EMAIL

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senders. For more resources, visit http://security.cat.com/phishing.


Hey Mike - Welcome to the list.

So the short answer is yes and the longer answer is Yes it’s a little complicated but doable.

For the explanation I’'m going to completely ignore projections - that’s a whole other discussion.

If you had a point (like a tower) you could run the buffer tool and buffer it one mile. From there

I think you would “clip by mask layer” and extract the image. You could save that as a geotiff or

whatever you needed. Life would be good. (I say all that like you know where the tools are - look

for processing at the top of QGIS - that gives you processing tools).

The bigger problem is the imagery - you can’t clip Google Satellite imagery and use that per the

license from Google. So you would need another image source be it landsat or something local

(maybe the county you’re working in has imagery they would share). Imagery is a pain.

Really - that’s the kicker - the imagery. Get that and then there’s the whole discussion on "get

it in a local projection" and you’re done - it’s about three steps in QGIS to get what you want.

It’s completely doable! I dunno how much this has helped but you’re on the right track.

Commands:

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#qgisbuf

fer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/processing_algs/q

gis/vectorgeometry.html*qgisbuffer__;Iw!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6N

jHwqzsxp1QIcIxEKimYAZTIwRUeetxWcrE$>

https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/gdal/rasterextraction.html#gdalc

liprasterbymasklayer<https://urldefense.com/v3/__https:/docs.qgis.org/testing/en/docs/user_manual/

processing_algs/gdal/rasterextraction.html*gdalcliprasterbymasklayer__;Iw!!M7dyoZOwuwF45AU!kH6lFpU

w2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUez1pQDmU$>

Yell if you need anything!

Randy

On Monday, March 14, 2022 7:10:56 PM EDT Mike Seskin wrote:

Preamble:

  1. I’ve been unsuccessfully searching for answers online for several days
  1. I am new to spatial analysis and GIS, and therefore trying to figure out what it can and

cannot do

Question:

I recently installed QGIS in the hopes it can help me create satellite image files from a shape

file consisting of points. I want to automatically define an area (for instance 1 square mile)

around each point and save the Google satellite image of each of the 1-square mile areas. Is

this possible in QGIS?

Thanks

Mike Seskin | EQL

Office: (858) 694-1851 | Cell: (442) 245-1779

Email: seskin_michael_x@solarturbines.com<mailto:seskin_michael_x@solarturbines.com%3E

Solar Turbines Incorporated

Caterpillar: Confidential Green


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com<https://urldefense.com/v3/__https:/www.northrivergeographic.c

om__;!!M7dyoZOwuwF45AU!kH6lFpUw2LB9mr5_sJC7Zg6MmXJdUngpW3rDnn-6NjHwqzsxp1QIcIxEKimYAZTIwRUexeg9u2g

$>

(p) 423.653.3611

(e) rjhale@northrivergeographic.com<mailto:rjhale@northrivergeographic.com%3E


Randal Hale

North River Geographic Systems, Inc

https://www.northrivergeographic.com

(p) 423.653.3611

(e) rjhale@northrivergeographic.com