Re: [GRASS-user] Temporal Analysis
On Wed, Jun 9, 2010 at 6:30 PM, Nikos Dumakis wrote: > Now I'm a bit lost on this versions stuff :) >> >> > - Do you have that specific code available? >> >> See SVN :) >> > What is the name of the module? r.series? Yes. >> > About: "Find it in GRASS 6.5 and 7 (also 6.4.1 once 6.4.0 is out): >> > http://grass.osgeo.org/grass70/manuals/html70_user/r.series.html "; >> > - You are saying that r.series function at GRASS6.5 and 7 includes that >> > possibility? >> >> Yes. >> >> > And can it be back-ported to 6.4? >> >> Yes, but only for 6.4.1. > > What is the 6.4.1 release? I only heard about 6.4.0RC6, GRASS6.5 and 7 never > 6.4.1... Is it as stable as GRASS6.4.0RC6? - 6.4.0RC6 is the 6th release candidate of 6.4.0. - 6.4.1 will be the successor of 6.4.0 (likely there will be release candidates, too). - etc. >> > And about "6.4.0 out": Isn't Out already? :D >> > Isn't it 6.4.0RC6 the GRASS6.4.0 ? No, it is just a release candidate. We found bugs therein which have been subsequently fixed (available via SVN, will be in 6.4.0[final]). Still some blocker bugs need to be fixed before releasing 6.4.0. Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Temporal Analysis
Now I'm a bit lost on this versions stuff :) > > > - Do you have that specific code available? > > See SVN :) > > What is the name of the module? r.series? > > About: "Find it in GRASS 6.5 and 7 (also 6.4.1 once 6.4.0 is out): > > http://grass.osgeo.org/grass70/manuals/html70_user/r.series.html " > > - You are saying that r.series function at GRASS6.5 and 7 includes that > > possibility? > > Yes. > > > And can it be back-ported to 6.4? > > Yes, but only for 6.4.1. > What is the 6.4.1 release? I only heard about 6.4.0RC6, GRASS6.5 and 7 never 6.4.1... Is it as stable as GRASS6.4.0RC6? > > > And about "6.4.0 out": Isn't Out already? :D > > Isn't it 6.4.0RC6 the GRASS6.4.0 ? ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Temporal Analysis
On Mon, Jun 7, 2010 at 6:38 PM, Nikos Dumakis wrote: > Thank you Martin. > I realized that one of the functions that I need, (counter of values bellow > a certain threshold) is not available in r.series. I have implemented it some time ago for this article http://www.mdpi.com/2072-4292/2/1/333 Estimating Daily Land Surface Temperatures in Mountainous Environments by Reconstructed MODIS LST Data I have implemented it for growing degree days (GDD) thresholding for insect development. Find it in GRASS 6.5 and 7 (also 6.4.1 once 6.4.0 is out): http://grass.osgeo.org/grass70/manuals/html70_user/r.series.html Hope this helps, Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Temporal Analysis
hello Nikos, I would combine r.mapcalc and r.series. With r.mapcalc you could extract values below a certain threshold and do the r.series analysis based on this new dataset. e.g. for i in `g.mlist pattern='pattern_of_your_raster*'` ; do r.mapcalc "$i_new = if($i < threshold, $i, null())" ; done r.series input="`g.mlist pattern='*_new' sep=,`" output=results method=sum regards, Martin On Montag, 7. Juni 2010 18:38:38 Nikos Dumakis wrote: > Thank you Martin. > > I realized that one of the functions that I need, (counter of values bellow > a certain threshold) is not available in r.series. Do you know, or do you > have any suggestion, how to perform this? > Thanks > > Best regards > Nikos > > On Mon, Jun 7, 2010 at 1:12 PM, Martin Wegmann < > > martin.wegm...@uni-wuerzburg.de> wrote: > > Hello Nikos, > > > > just give r.series a try. > > > > regards, Martin > > > > On Montag, 7. Juni 2010 14:06:17 Nikos Dumakis wrote: > > > Greetings > > > > > > > > > I have to do some simple-statistical TEMPORAL analysis between a long > > > data-series. I mean, I have do some temporal average for each pixel, > > > minimum and max. Instead of doing this statistical- analysis for all > > > pixels in an image, I have to do this analysis for each image-pixel > > > along its temporal series. > > > > > > Is there any function to do this? Or as anyone tried ? > > > Thanks > > > Nikos > > > > -- > > Dr. Martin Wegmann > > > > University of Wuerzburg > > Institute of Geography > > Department of Remote Sensing > > Remote Sensing and Ecosystem Research > > Am Hubland > > 97074 Wuerzburg, Germany > > @ > > German Aerospace Center (DLR) > > German Remote Sensing Data Center (DFD) > > > > Phone: +49-(0)931-31-83446 > > Fax: +49-(0)931-31-84961 > > Email: martin.wegm...@uni-wuerzburg.de > > url: http://www.remote-sensing.uni-wuerzburg.de > > url: http://www.dlr.de/caf > > url: http://www.global-change-ecology.de -- Dr. Martin Wegmann University of Wuerzburg Institute of Geography Department of Remote Sensing Remote Sensing and Ecosystem Research Am Hubland 97074 Wuerzburg, Germany @ German Aerospace Center (DLR) German Remote Sensing Data Center (DFD) Phone: +49-(0)931-31-83446 Fax: +49-(0)931-31-84961 Email: martin.wegm...@uni-wuerzburg.de url: http://www.remote-sensing.uni-wuerzburg.de url: http://www.dlr.de/caf url: http://www.global-change-ecology.de ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Temporal Analysis
On Monday 07 June 2010, Nikos Dumakis wrote: > Thank you Martin. > > I realized that one of the functions that I need, (counter of values bellow > a certain threshold) is not available in r.series. Do you know, or do you > have any suggestion, how to perform this? > Thanks > > Best regards > Nikos Hi Nikos, I can't seem to find it right now, but there was a discussion a while back regarding user-defined functions for r.series. I don't think anything came out of it, but one of the Martins or Markus' (I think) was able to put some nice working into a more consolidated stats library. Others may recall more details. The basic premise: implement a mechanism by which a vector (i.e. the array of values defined by a single cell but sliced through a time series of rasters) could be passed to an R function, python function, etc. that would do its work and return a scalar to GRASS. This seems like it would be hard to implement, but would add tremendous flexibility to time series analysis. Another approach might be to use the 'raster' package for R. Cheers, Dylan > On Mon, Jun 7, 2010 at 1:12 PM, Martin Wegmann < > > martin.wegm...@uni-wuerzburg.de> wrote: > > Hello Nikos, > > > > just give r.series a try. > > > > regards, Martin > > > > On Montag, 7. Juni 2010 14:06:17 Nikos Dumakis wrote: > > > Greetings > > > > > > > > > I have to do some simple-statistical TEMPORAL analysis between a long > > > data-series. I mean, I have do some temporal average for each pixel, > > > minimum and max. Instead of doing this statistical- analysis for all > > > pixels in an image, I have to do this analysis for each image-pixel > > > along its temporal series. > > > > > > Is there any function to do this? Or as anyone tried ? > > > Thanks > > > Nikos > > > > -- > > Dr. Martin Wegmann > > > > University of Wuerzburg > > Institute of Geography > > Department of Remote Sensing > > Remote Sensing and Ecosystem Research > > Am Hubland > > 97074 Wuerzburg, Germany > > @ > > German Aerospace Center (DLR) > > German Remote Sensing Data Center (DFD) > > > > Phone: +49-(0)931-31-83446 > > Fax: +49-(0)931-31-84961 > > Email: martin.wegm...@uni-wuerzburg.de > > url: http://www.remote-sensing.uni-wuerzburg.de > > url: http://www.dlr.de/caf > > url: http://www.global-change-ecology.de -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Temporal Analysis
Thank you Martin. I realized that one of the functions that I need, (counter of values bellow a certain threshold) is not available in r.series. Do you know, or do you have any suggestion, how to perform this? Thanks Best regards Nikos On Mon, Jun 7, 2010 at 1:12 PM, Martin Wegmann < martin.wegm...@uni-wuerzburg.de> wrote: > Hello Nikos, > > just give r.series a try. > > regards, Martin > > On Montag, 7. Juni 2010 14:06:17 Nikos Dumakis wrote: > > Greetings > > > > > > I have to do some simple-statistical TEMPORAL analysis between a long > > data-series. I mean, I have do some temporal average for each pixel, > > minimum and max. Instead of doing this statistical- analysis for all > > pixels in an image, I have to do this analysis for each image-pixel along > > its temporal series. > > > > Is there any function to do this? Or as anyone tried ? > > Thanks > > Nikos > > -- > Dr. Martin Wegmann > > University of Wuerzburg > Institute of Geography > Department of Remote Sensing > Remote Sensing and Ecosystem Research > Am Hubland > 97074 Wuerzburg, Germany > @ > German Aerospace Center (DLR) > German Remote Sensing Data Center (DFD) > > Phone: +49-(0)931-31-83446 > Fax: +49-(0)931-31-84961 > Email: martin.wegm...@uni-wuerzburg.de > url: http://www.remote-sensing.uni-wuerzburg.de > url: http://www.dlr.de/caf > url: http://www.global-change-ecology.de > > ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Temporal Analysis
Hello Nikos, just give r.series a try. regards, Martin On Montag, 7. Juni 2010 14:06:17 Nikos Dumakis wrote: > Greetings > > > I have to do some simple-statistical TEMPORAL analysis between a long > data-series. I mean, I have do some temporal average for each pixel, > minimum and max. Instead of doing this statistical- analysis for all > pixels in an image, I have to do this analysis for each image-pixel along > its temporal series. > > Is there any function to do this? Or as anyone tried ? > Thanks > Nikos -- Dr. Martin Wegmann University of Wuerzburg Institute of Geography Department of Remote Sensing Remote Sensing and Ecosystem Research Am Hubland 97074 Wuerzburg, Germany @ German Aerospace Center (DLR) German Remote Sensing Data Center (DFD) Phone: +49-(0)931-31-83446 Fax: +49-(0)931-31-84961 Email: martin.wegm...@uni-wuerzburg.de url: http://www.remote-sensing.uni-wuerzburg.de url: http://www.dlr.de/caf url: http://www.global-change-ecology.de ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Temporal Analysis
Greetings I have to do some simple-statistical TEMPORAL analysis between a long data-series. I mean, I have do some temporal average for each pixel, minimum and max. Instead of doing this statistical- analysis for all pixels in an image, I have to do this analysis for each image-pixel along its temporal series. Is there any function to do this? Or as anyone tried ? Thanks Nikos ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
