Rank: 1698 based on 90 downloads (last 30 days) and 3 files submitted
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James Ramm

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Aarhus Uni

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21 Apr 2011 Screenshot Kriging and Inverse Distance Interpolation using GSTAT InterpolationGstat performs inverse distance or kriging interpolation using gstat. Author: James Ramm inverse distance, kriging, interpolation, 2d interpolation, gridding, earth sciences 56 9
  • 2.5
2.5 | 2 ratings
13 Apr 2011 Surface2VTK Interpolates scattered data and saves the result to a vtk file. Author: James Ramm vtk, surface, surf, 3d, graphics, paraview 18 4
  • 4.0
4.0 | 1 rating
23 Jan 2011 Screenshot smartSlice and iGSlice slice into irregular grids with smartSlice and iGSlice. NaN values are allowed. Author: James Ramm slice, 3d, irregular grid, volume visualization, nonmonotonic, 3d grid 16 0
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01 Sep 2011 variogramfit fits different theoretical variograms to an experimental variogram Author: Wolfgang Schwanghart

As you know I've used this in conjuction with kriging by GSTAT for large datasets.

I'm now using this to create 3D grids from scattered XYZC data ( - layered geophysical/geological data). This requires many interpolations in a loop. To this end, I wonder if it is possible to automate the model selection process so that the 'best' model may be chosen for each new sample variogram?

20 Aug 2011 Surface2VTK Interpolates scattered data and saves the result to a vtk file. Author: James Ramm

Theres no requirement for integer inputs

10 Aug 2011 Surface2VTK Interpolates scattered data and saves the result to a vtk file. Author: James Ramm

further:
If you wish to export a surface which has only 1 colour, simply create a vector, r, which has the same length as x,y and z and only 1 value.

21 Apr 2011 Kriging and Inverse Distance Interpolation using GSTAT InterpolationGstat performs inverse distance or kriging interpolation using gstat. Author: James Ramm

Hi Wolfgang,
Thanks for letting me know the errors.
I just uploaded a corrected version (should appear tomorrow, april 22nd)
Tested with 'peaks' data sets for both inverse distance and kriging.
Please let me know about any other errors.
Gstat still needs to be in your working directory. I will make this more flexible in the near future.

18 Apr 2011 Kriging and Inverse Distance Interpolation using GSTAT InterpolationGstat performs inverse distance or kriging interpolation using gstat. Author: James Ramm

Gstat is freely available from gstat.org. Its a small executable - just save it to the same directory as InterpolationGstat and you are set.

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22 Mar 2014 Kriging and Inverse Distance Interpolation using GSTAT InterpolationGstat performs inverse distance or kriging interpolation using gstat. Author: James Ramm Shruti

Sir, I founf the functions very helpful. But when I'm running the function InterpolationGstat.m I'm getting an error gstat.exe has stopped working whereas I could able to run the function sampleVarioGstat.m . Can you please let me know what todo. Its really urgent.

15 Jun 2012 Kriging and Inverse Distance Interpolation using GSTAT InterpolationGstat performs inverse distance or kriging interpolation using gstat. Author: James Ramm Cynthia Gerlein

James,
I would like to get the semi-variogram of a very large dataset (230 000 datapoints). Gstat seems to be the perfect solution but i get this error:

Error using fgets
Invalid file identifier. Use fopen to generate
a valid file identifier.

Error in fgetl (line 34)
[tline,lt] = fgets(fid);

Error in SampleVarioGstat (line 68)
fgetl(fid);

Error in AutocorrGPR (line 361)
[av_dist,gamma,h,np]=SampleVarioGstat(x,y,z)

I used Wolfgang's example for x, y and z : x = rand(1000,1)*4-2; y = rand(1000,1)*4-2; z = 3*sin(x*15)+ randn(size(x)); and I am using Matlab 2012a on MacOS 10.7.4.

Any suggestion on what the problem might be ?

15 Jun 2012 Kriging and Inverse Distance Interpolation using GSTAT InterpolationGstat performs inverse distance or kriging interpolation using gstat. Author: James Ramm Cynthia Gerlein

I just noticed that gstat doesn't seem to be working and I'm guessing this might be the source of the error above. On top of the error message that I posted previously, I also get:

Trying to run GSTAT on gstat.cmd
GSTAT FAILED ............

I tried to download the version for Mac (http://www.gstat.org/download.html) and to put in my file, but it's still not working...

15 Jun 2012 Kriging and Inverse Distance Interpolation using GSTAT InterpolationGstat performs inverse distance or kriging interpolation using gstat. Author: James Ramm Cynthia Gerlein

PS: I am using Matlab 2012a on MacOS 10.7.4.

20 Aug 2011 Surface2VTK Interpolates scattered data and saves the result to a vtk file. Author: James Ramm James Ramm

Theres no requirement for integer inputs

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