Re: [GRASS-dev] t.rast.mapcalc: The temporal map type of the sample dataset must be interval
Hi Martin, Sorry to resume such old thread, but I have the same issue. On Wed, Nov 30, 2016 at 11:08 PM, Martin Landa wrote: > 2016-11-30 23:05 GMT+01:00 Veronica Andreo : >> Maybe the method=equal, which is the default method for t.rast.mapcalc, is >> not defined for time instance data (?). >> >> Have you tried changing it? For example, setting method=start? Perhaps in >> that way, only start time is evaluated to perform the operation between time >> series. > > thanks for tip, anyway changing method to 'start' doesn't seem to have > any effect, I am getting the same error. Ma Did you find a way to go on? I have two temporal rasters: $ *t.rast.list Rbeam_2000m@Rbeam_2000m | head* name|mapset|start_time|end_time Rbeam_2000m_20120101_00|Rbeam_2000m|2012-01-01 00:00:00|None Rbeam_2000m_20120101_01|Rbeam_2000m|2012-01-01 01:00:00|None Rbeam_2000m_20120101_02|Rbeam_2000m|2012-01-01 02:00:00|None ... and $ *t.rast.list Rbeam_250m@Rbeam_250m | head * name|mapset|start_time|end_time Rbeam_250m_20120101_00|Rbeam_250m|2012-01-01 00:00:00|None Rbeam_250m_20120101_01|Rbeam_250m|2012-01-01 01:00:00|None Rbeam_250m_20120101_02|Rbeam_250m|2012-01-01 02:00:00|None ... But when I try to execute the t.rast.mapcalc I got: $ *t.rast.mapcalc input=Rbeam_2000m@Rbeam_2000m,Rbeam_250m@Rbeam_250m expression='(Rbeam_250m - Rbeam_2000m)/Rbeam_250m' output=Rbeam_norm_diff basename=Rbeam_norm_diff nprocs=4 method=start --o* Starting temporal sampling... ERROR: The temporal map type of the sample dataset must be interval No samples found for map calculation I have to delete and register the maps with `t.register -i`? Now I'm going to try this! Any hints? Best regards Pietro ___ grass-dev mailing list grass-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-dev
Re: [GRASS-dev] t.rast.mapcalc: The temporal map type of the sample dataset must be interval
Hi, 2016-11-30 23:05 GMT+01:00 Veronica Andreo : > Maybe the method=equal, which is the default method for t.rast.mapcalc, is > not defined for time instance data (?). > > Have you tried changing it? For example, setting method=start? Perhaps in > that way, only start time is evaluated to perform the operation between time > series. thanks for tip, anyway changing method to 'start' doesn't seem to have any effect, I am getting the same error. Ma -- Martin Landa http://geo.fsv.cvut.cz/gwiki/Landa http://gismentors.cz/mentors/landa ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
Re: [GRASS-dev] t.rast.mapcalc: The temporal map type of the sample dataset must be interval
Hi Martin, (very wild guess) Maybe the method=equal, which is the default method for t.rast.mapcalc, is not defined for time instance data (?). Have you tried changing it? For example, setting method=start? Perhaps in that way, only start time is evaluated to perform the operation between time series. Also, t.select should show the topological relations between maps of the time series within an expression. So that might be a hint if it is in fact a temporal topology issue. Vero El 30 nov. 2016 9:30 p. m., "Martin Landa" escribió: > Hi, > > I have two spatial-temporal dataset which are equal (time POV): > > $ t.rast.list tp5 > clip_LT51910261987057XXX02_B5|pisek_tabor|1987-02-26 09:12:36|None > clip_LT51910262004152KIS00_B5|pisek_tabor|2004-05-31 09:32:23|None > clip_LT51910262004200KIS00_B5|pisek_tabor|2004-07-18 09:33:46|None > ... > > $ t.rast.list tp2 > ... > clip_LT51910261987057XXX02_B2|pisek_tabor|1987-02-26 09:12:36|None > clip_LT51910262004152KIS00_B2|pisek_tabor|2004-05-31 09:32:23|None > clip_LT51910262004200KIS00_B2|pisek_tabor|2004-07-18 09:33:46|None > > $ t.rast.mapcalc in=tp2,tp5 exp="tp5 < 40 || tp2 < 40" out=water > basename=water --o > ERROR: The temporal map type of the sample dataset must be interval > No samples found for map calculation > > Why the dataset must be interval? I mean start time and end time > (which is None) are equal. Thanks for explanation, Martin > > -- > Martin Landa > http://geo.fsv.cvut.cz/gwiki/Landa > http://gismentors.cz/mentors/landa > ___ > 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
