Re: [GRASS-user] low radiance values after i.atcor and i.topo.corr

2008-06-22 Thread maning sambale
Nikos, thank you fo testing seems it's working OK now. I will test it myself later. maning On 6/20/08, Nikos Alexandris [EMAIL PROTECTED] wrote: Not sure if this helps... (!) --- r.univar change_pca_250m_06.239_07.242.2_test 100% total null and non-null cells: 247720 total null cells:

Re: [GRASS-user] low radiance values after i.atcor and i.topo.corr

2008-06-20 Thread Nikos Alexandris
Not sure if this helps... (!) --- r.univar change_pca_250m_06.239_07.242.2_test 100% total null and non-null cells: 247720 total null cells: 162432 Of the non-null cells: -- n: 85288 minimum: -0.315021 maximum: 0.260252 range: 0.575273 mean: -0.000584902 mean of absolute

Re: [GRASS-user] low radiance values after i.atcor and i.topo.corr

2008-06-19 Thread Nikos Alexandris
On Wed, 2008-06-18 at 22:41 +0100, Glynn Clements wrote: Glynn Clements wrote: Thanks! Multiplying by 1000 with r.mapcalc gives better results. Any chance adding floating points (FCELL) to i.cluster? I had a brief look at the code[1], and cannot see any obvious reason why the

Re: [GRASS-user] low radiance values after i.atcor and i.topo.corr

2008-06-19 Thread Glynn Clements
Nikos Alexandris wrote: I have committed these changes (splitting the cluster code off to a separate library, and changing it to use DCELL instead of CELL) to the SVN trunk. I would appreciate it if someone who understands i.cluster could test the current version. I've compiled

Re: [GRASS-user] low radiance values after i.atcor and i.topo.corr

2008-06-19 Thread maning sambale
On 6/19/08, Nikos Alexandris [EMAIL PROTECTED] wrote: On Wed, 2008-06-18 at 22:41 +0100, Glynn Clements wrote: Glynn Clements wrote: Thanks! Multiplying by 1000 with r.mapcalc gives better results. Any chance adding floating points (FCELL) to i.cluster? I had a brief look at the

Re: [GRASS-user] low radiance values after i.atcor and i.topo.corr

2008-06-18 Thread Glynn Clements
Glynn Clements wrote: Thanks! Multiplying by 1000 with r.mapcalc gives better results. Any chance adding floating points (FCELL) to i.cluster? I had a brief look at the code[1], and cannot see any obvious reason why the values would need to be integers, so I'm assuming that it's just

[GRASS-user] low radiance values after i.atcor and i.topo.corr

2008-06-16 Thread maning sambale
Hi, After implementing gain and bias correction and topographic correction, I get very low values for landsat data data for example range of values of band1: GRASS 6.3.1svn (p112r056):~ r.info lsat7_2000.toar.1 -r min=0.030303 max=0.372067 [Raster MASK present] GRASS 6.3.1svn (p112r056):~