Re: [GRASS-user] r.quantile: what it exaclty do?
On Fri, Jan 2, 2009 at 8:40 PM, Dylan Beaudette wrote: > On Fri, Jan 2, 2009 at 4:55 AM, Jarek Jasiewicz wrote: >> Hi >> I tirend used r.quantile on SRTM data for Poland (min value about to 0, max >> value about to 2500 m a.s.l) >> >> r.quantile input=pol...@permanent quantiles=4 >> percentiles=0.001,0.01,0,1,0.25,0.50,0.75,0.90,0.99,0.999 bins=100 >> >> and I recived: >> >> 0:0.00:0.00 >> 1:0.001000:0.00 >> 2:0.01:0.00 >> 3:0.25:0.00 >> 4:0.50:1.00 >> 5:0.75:2.00 >> 6:0.90:3.00 >> 7:0.99:3.00 >> 8:0.999000:3.00 >> 9:1.00:3.00 >> >> It looks like the results are divided by 1000 and rounded to the nearest >> integer. >> >> Did I something wrong? >> >> Jarek >> > > I thought that the user supplies one of [quantiles=] | [percentiles=] > ... could that be related to the odd output. I have verified (with R) > that r.quantile can compute correct quantiles... however, on my system > I need to set bins=100 or so, as the higher i set 'bins' odd things > would happen. > > Glynn should know for sure. Can you please file a bug report on this? Preferable with a Spearfish/NC reproducible example? Thanks Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] r.quantile: what it exaclty do?
Dylan Beaudette pisze: On Fri, Jan 2, 2009 at 4:55 AM, Jarek Jasiewicz wrote: Hi I tirend used r.quantile on SRTM data for Poland (min value about to 0, max value about to 2500 m a.s.l) r.quantile input=pol...@permanent quantiles=4 percentiles=0.001,0.01,0,1,0.25,0.50,0.75,0.90,0.99,0.999 bins=100 and I recived: 0:0.00:0.00 1:0.001000:0.00 2:0.01:0.00 3:0.25:0.00 4:0.50:1.00 5:0.75:2.00 6:0.90:3.00 7:0.99:3.00 8:0.999000:3.00 9:1.00:3.00 It looks like the results are divided by 1000 and rounded to the nearest integer. Did I something wrong? Jarek I thought that the user supplies one of [quantiles=] | [percentiles=] ... could that be related to the odd output. I have verified (with R) that r.quantile can compute correct quantiles... however, on my system I need to set bins=100 or so, as the higher i set 'bins' odd things would happen. Glynn should know for sure. Dylan Thanks it really seems that the problem was in default number of bins ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] r.quantile: what it exaclty do?
On Fri, Jan 2, 2009 at 4:55 AM, Jarek Jasiewicz wrote: > Hi > I tirend used r.quantile on SRTM data for Poland (min value about to 0, max > value about to 2500 m a.s.l) > > r.quantile input=pol...@permanent quantiles=4 > percentiles=0.001,0.01,0,1,0.25,0.50,0.75,0.90,0.99,0.999 bins=100 > > and I recived: > > 0:0.00:0.00 > 1:0.001000:0.00 > 2:0.01:0.00 > 3:0.25:0.00 > 4:0.50:1.00 > 5:0.75:2.00 > 6:0.90:3.00 > 7:0.99:3.00 > 8:0.999000:3.00 > 9:1.00:3.00 > > It looks like the results are divided by 1000 and rounded to the nearest > integer. > > Did I something wrong? > > Jarek > I thought that the user supplies one of [quantiles=] | [percentiles=] ... could that be related to the odd output. I have verified (with R) that r.quantile can compute correct quantiles... however, on my system I need to set bins=100 or so, as the higher i set 'bins' odd things would happen. Glynn should know for sure. Dylan ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] r.quantile: what it exaclty do?
Hi I tirend used r.quantile on SRTM data for Poland (min value about to 0, max value about to 2500 m a.s.l) r.quantile input=pol...@permanent quantiles=4 percentiles=0.001,0.01,0,1,0.25,0.50,0.75,0.90,0.99,0.999 bins=100 and I recived: 0:0.00:0.00 1:0.001000:0.00 2:0.01:0.00 3:0.25:0.00 4:0.50:1.00 5:0.75:2.00 6:0.90:3.00 7:0.99:3.00 8:0.999000:3.00 9:1.00:3.00 It looks like the results are divided by 1000 and rounded to the nearest integer. Did I something wrong? Jarek ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
