[GRASS-user] Finding Landsat's infrared bands

GRASS GRASS user
,
1

Hi all,

I downloaded some Landsat data from the USGS. When I opened the GeoTiff in GRASS using r.in.gdal, I got the Blue, Green and Red bands. How do I get the near infrared, two medium infrared, thermal, and panchromatic bands.

I am using GRASS 6.4 RC6 on OS X.

Kurt

2

On Thu, Apr 15, 2010 at 10:14 PM, Kurt Springs <ferret_bard@mac.com> wrote:

Hi all,

I downloaded some Landsat data from the USGS. When I opened the GeoTiff in GRASS using r.in.gdal, I got the Blue, Green and Red bands. How do I get the near infrared, two medium infrared, thermal, and panchromatic bands.

They are commonly in a separate file.

See here for a convenient conversion/import script which you may
adapt for your needs (at page bottom):
  http://www.grassbook.org/examples_menu3rd.php

cheers
Markus

3

Just an update. I looked on the USGS Seamless Map Server about the Landsat's bands. What I found is they only include three bands in their GEOTiff. The near infrared translates as red, red as green, and green as blue.

Now we know.

Kurt
On Apr 15, 2010, at 4:34 PM, Markus Neteler wrote:

On Thu, Apr 15, 2010 at 10:14 PM, Kurt Springs <ferret_bard@mac.com> wrote:

Hi all,

I downloaded some Landsat data from the USGS. When I opened the GeoTiff in GRASS using r.in.gdal, I got the Blue, Green and Red bands. How do I get the near infrared, two medium infrared, thermal, and panchromatic bands.

They are commonly in a separate file.

See here for a convenient conversion/import script which you may
adapt for your needs (at page bottom):
http://www.grassbook.org/examples_menu3rd.php

cheers
Markus

4

Kurt Springs wrote:

Just an update. I looked on the USGS Seamless Map Server about the Landsat's bands. What I found is they only include three bands in their GEOTiff. The near infrared translates as red, red as green, and green as blue.

I think that what you got was their "mosaic" product, which is a prepared mix of three bands.
You can get the base landsat imagery, all 7 separate bands, as greyscale tiff files from here:
http://glcf.umd.edu/data/landsat/

Now we know.

Kurt
On Apr 15, 2010, at 4:34 PM, Markus Neteler wrote:

On Thu, Apr 15, 2010 at 10:14 PM, Kurt Springs <ferret_bard@mac.com> wrote:
    

Hi all,

I downloaded some Landsat data from the USGS. When I opened the GeoTiff in GRASS using r.in.gdal, I got the Blue, Green and Red bands. How do I get the near infrared, two medium infrared, thermal, and panchromatic bands.
      

They are commonly in a separate file.

See here for a convenient conversion/import script which you may
adapt for your needs (at page bottom):
http://www.grassbook.org/examples_menu3rd.php

cheers
Markus
    
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