Re: [GRASS-dev] PIxel-wise regression contribution
Damien O'Grady wrote: Hi there I would like to contribute a script that I have used in my research to the broader field. The script carries out linear regression, except that rather than using two rasters for the x and y variables, it uses any number of pairs of rasters, allowing the regression to be carried out across a time series, resulting in a slope, intercept and R^2 values for each pixel. It seems that your script is doing the same like the C module r.regression.series in grass-addons [0] ? Markus M [0] https://trac.osgeo.org/grass/browser/grass-addons/grass7/raster/r.regression.series The crunch is that it is written in perl, as this is what I know best and it serves me well. I have done my best to conform to the stated standards, and I have produced a fairly detailed manual page. This will give you a better idea of what the script does, with examples. I attach the script and html here. I hope that you will consider making it available to others. Here at James Cook University, by the way, we are encouraging a switch from problematic and costly proprietary software to GRASS GIS. I am a major fan of GRASS, particularly on a Linux platform, and I am pleased that more and more students are listening. You should see a sharp rise in its use here in Queensland in the near future. Thanks Damien O'Grady ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
Re: [GRASS-dev] PIxel-wise regression contribution
Yes, you are quite right, and r.regression.series is far more elegant. I wish I'd seen it three years ago, when I really needed it! Thanks Damien On Tue, 2012-05-22 at 12:04 +0200, Markus Metz wrote: Damien O'Grady wrote: Hi there I would like to contribute a script that I have used in my research to the broader field. The script carries out linear regression, except that rather than using two rasters for the x and y variables, it uses any number of pairs of rasters, allowing the regression to be carried out across a time series, resulting in a slope, intercept and R^2 values for each pixel. It seems that your script is doing the same like the C module r.regression.series in grass-addons [0] ? Markus M [0] https://trac.osgeo.org/grass/browser/grass-addons/grass7/raster/r.regression.series The crunch is that it is written in perl, as this is what I know best and it serves me well. I have done my best to conform to the stated standards, and I have produced a fairly detailed manual page. This will give you a better idea of what the script does, with examples. I attach the script and html here. I hope that you will consider making it available to others. Here at James Cook University, by the way, we are encouraging a switch from problematic and costly proprietary software to GRASS GIS. I am a major fan of GRASS, particularly on a Linux platform, and I am pleased that more and more students are listening. You should see a sharp rise in its use here in Queensland in the near future. Thanks Damien O'Grady ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
Re: [GRASS-dev] PIxel-wise regression contribution
Markus Metz wrote: It seems that your script is doing the same like the C module r.regression.series in grass-addons [0] ? Damien wrote: Yes, you are quite right, let's race 'em! I wish I'd seen it three years ago, when I really needed it! it's only 8 months old :) Hamish ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
[GRASS-dev] PIxel-wise regression contribution
Hi there I would like to contribute a script that I have used in my research to the broader field. The script carries out linear regression, except that rather than using two rasters for the x and y variables, it uses any number of pairs of rasters, allowing the regression to be carried out across a time series, resulting in a slope, intercept and R^2 values for each pixel. The crunch is that it is written in perl, as this is what I know best and it serves me well. I have done my best to conform to the stated standards, and I have produced a fairly detailed manual page. This will give you a better idea of what the script does, with examples. I attach the script and html here. I hope that you will consider making it available to others. Here at James Cook University, by the way, we are encouraging a switch from problematic and costly proprietary software to GRASS GIS. I am a major fan of GRASS, particularly on a Linux platform, and I am pleased that more and more students are listening. You should see a sharp rise in its use here in Queensland in the near future. Thanks Damien O'Grady ogrady.tar.gz Description: application/compressed-tar ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
