[GRASS-user] Plot 3D Drillholes in Grass GIS

GRASS GRASS user
1

I was wondering if anybody is familiar with ways of plotting drill hole data in Grass (i.e. to visualize in NVIZ or to manage attributes, query etc...) based on point features with known dip, strike and azimuth angles.

I have come across a paper (Development of Visualization Tools for Geologic Information on Grass GIS) which seems to do just that, however as far as I can tell it has not been released or provided to the Grass Community.

If anybody is familiar with anything else, it would be greatly appreciated.

Thanks,

Casey

2

Hi...
we have worked on doing volumetric interpolation of dip and direction
obtained from survey of geological strata (but if you have a lot of data
coming from more drill holes the problem is exactly the same:

1) we consider the normal to the plane representing in each point the
badding strata

2) we interpolate (3d interpolation with v.vol.rst) the three components
(xyz) of this normal, obtaining a voxel map for each component

3) we combine back this three components to obtain a volumetric
interpolated map (voxel) of geological dip and direction

4) now we can obtaine slices of this two maps....

but if your problem is simply visualization of the data coming from a
single hole then a possible solution is to create inclined planes
(small) that pass from the point where bedding has been collected.
Then represents this planes into NVIZ

cheers

ivan

Il giorno mar, 10/03/2009 alle 12.30 -0700, Casey Vandenberg ha scritto:

I was wondering if anybody is familiar with ways of plotting drill hole
data in Grass (i.e. to visualize in NVIZ or to manage attributes, query
etc...) based on point features with known dip, strike and azimuth angles.

I have come across a paper (Development of Visualization Tools for
Geologic Information on Grass GIS) which seems to do just that, however
as far as I can tell it has not been released or provided to the Grass
Community.

If anybody is familiar with anything else, it would be greatly appreciated.

Thanks,

Casey
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Ivan Marchesini
Department of Civil and Environmental Engineering
University of Perugia
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3

Hi Casey,

You can take a look at
"Construction and Visualization of a Three Dimensional Geologic Model Using GRASS GIS"
Transactions in GIS Volume 8 Issue 2, Pages 211 - 223
http://www3.interscience.wiley.com/cgi-bin/fulltext/118806744/PDFSTART

Casey Vandenberg wrote:

I was wondering if anybody is familiar with ways of plotting drill hole data in Grass (i.e. to visualize in NVIZ or to manage attributes, query etc...) based on point features with known dip, strike and azimuth angles.

I have come across a paper (Development of Visualization Tools for Geologic Information on Grass GIS) which seems to do just that, however as far as I can tell it has not been released or provided to the Grass Community.

"Development of Visualization Tools for Geologic Information on Grass GIS" is available at
http://wgrass.media.osaka-cu.ac.jp/gisideas06/viewpaper.php?id=170

The corresponding author of the above paper are preparing to publish a detailed paper on the above work and will release to the GRASS community. Not sure how soon.

Best regards

Venka

4

Thanks for your reply to my question Ivan and Venka (and thanks for the links
to the papers). If you get word on when the corresponding author is planning
on releasing the above work to the grass community I would be very
interested in hearing about it.

Casey

Venkatesh Raghavan wrote:

Hi Casey,

You can take a look at
"Construction and Visualization of a Three Dimensional Geologic Model
Using GRASS GIS"
Transactions in GIS Volume 8 Issue 2, Pages 211 - 223
http://www3.interscience.wiley.com/cgi-bin/fulltext/118806744/PDFSTART

Casey Vandenberg wrote:

I was wondering if anybody is familiar with ways of plotting drill hole
data in Grass (i.e. to visualize in NVIZ or to manage attributes, query
etc...) based on point features with known dip, strike and azimuth
angles.

I have come across a paper (Development of Visualization Tools for
Geologic Information on Grass GIS) which seems to do just that, however
as far as I can tell it has not been released or provided to the Grass
Community.

"Development of Visualization Tools for Geologic Information on Grass
GIS" is available at
http://wgrass.media.osaka-cu.ac.jp/gisideas06/viewpaper.php?id=170

The corresponding author of the above paper are preparing to publish a
detailed paper on the above work and will release to the GRASS
community. Not sure how soon.

Best regards

Venka
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5

Casey,

I was very interested in your original email, so I tried to track down the GRASS modules mentioned in the paper you cited. As it turns out the authors have written several related papers. While I was able to obtain the other papers, I could not locate the software. So, I emailed the authors (Shinji Masumoto) and just got a response. Unfortunately, the authors are unwilling to release the software into the public domain. I have not specifically tried NVIZ visualization as you describe, but I think the 3rd Ed. of "Open Source GIS: A GRASS GIS Approach" covers how to create 3D vectors which can be brought into NVIZ to produce what you need.

Regards,
Tom

Casey Vandenberg wrote:

I was wondering if anybody is familiar with ways of plotting drill hole data in Grass (i.e. to visualize in NVIZ or to manage attributes, query etc...) based on point features with known dip, strike and azimuth angles.

I have come across a paper (Development of Visualization Tools for Geologic Information on Grass GIS) which seems to do just that, however as far as I can tell it has not been released or provided to the Grass Community.

If anybody is familiar with anything else, it would be greatly appreciated.

Thanks,

Casey
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grass-user@lists.osgeo.org
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Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177

EMAIL: thomas.adams@noaa.gov

VOICE: 937-383-0528
FAX: 937-383-0033

6

I was trying to find related software or a way to work with boreholes
and geological cross sections in grass, not just for the drawing part
but a way to use it for geological analysis.
It's very sad the fact that these modules are not for public use, even
with a stricter licensing than GPL.

Regards,
Vasilis

On Wed, Mar 18, 2009 at 1:45 PM, Thomas Adams <Thomas.Adams@noaa.gov> wrote:

Casey,

I was very interested in your original email, so I tried to track down the
GRASS modules mentioned in the paper you cited. As it turns out the authors
have written several related papers. While I was able to obtain the other
papers, I could not locate the software. So, I emailed the authors (Shinji
Masumoto) and just got a response. Unfortunately, the authors are unwilling
to release the software into the public domain. I have not specifically
tried NVIZ visualization as you describe, but I think the 3rd Ed. of "Open
Source GIS: A GRASS GIS Approach" covers how to create 3D vectors which can
be brought into NVIZ to produce what you need.

Regards,
Tom

Casey Vandenberg wrote:

I was wondering if anybody is familiar with ways of plotting drill hole
data in Grass (i.e. to visualize in NVIZ or to manage attributes, query
etc...) based on point features with known dip, strike and azimuth angles.

I have come across a paper (Development of Visualization Tools for
Geologic Information on Grass GIS) which seems to do just that, however as
far as I can tell it has not been released or provided to the Grass
Community.

If anybody is familiar with anything else, it would be greatly
appreciated.

Thanks,

Casey
_______________________________________________
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user

--
Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177

EMAIL: thomas.adams@noaa.gov

VOICE: 937-383-0528
FAX: 937-383-0033

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