Re: [GRASS-user] i.pca vs. r.covar/m.eigensystem/r.mapcalc

2008-11-07 Thread Nikos Alexandris
On Wed, 2008-11-05 at 07:06 -0800, Dylan Beaudette wrote: # trying with R x - readRAST6(c('b2','b6','b7')) x.pca - prcomp([EMAIL PROTECTED]) Error in svd(x, nu = 0) : infinite or missing values in 'x' ## again the same error! I'll try another time again. Kind regards, Nikos

Re: [GRASS-user] i.pca vs. r.covar/m.eigensystem/r.mapcalc

2008-11-07 Thread Dylan Beaudette
On Friday 07 November 2008, Nikos Alexandris wrote: On Wed, 2008-11-05 at 07:06 -0800, Dylan Beaudette wrote: # trying with R x - readRAST6(c('b2','b6','b7')) x.pca - prcomp([EMAIL PROTECTED]) Error in svd(x, nu = 0) : infinite or missing values in 'x' ## again the same

Re: [GRASS-user] i.pca vs. r.covar/m.eigensystem/r.mapcalc

2008-11-07 Thread Nikos Alexandris
On Fri, 2008-11-07 at 09:54 -0800, Dylan Beaudette wrote: On Friday 07 November 2008, Nikos Alexandris wrote: On Wed, 2008-11-05 at 07:06 -0800, Dylan Beaudette wrote: [...] I've bombed in another wall :-( x.nas - which(is.na([EMAIL PROTECTED]@MOD2007_242_500_sur_refl_b02)

Re: [GRASS-user] i.pca vs. r.covar/m.eigensystem/r.mapcalc

2008-11-05 Thread Nikos Alexandris
On Tue, 2008-10-28 at 09:39 -0700, Dylan Beaudette wrote: On Monday 27 October 2008, Nikos Alexandris wrote: My apologies for BUMPing :-) On Sun, 2008-10-12 at 00:20 +0200, Nikos Alexandris wrote: I wanted to check/verify some i.pca results so I calculated 2 principal components using

Re: [GRASS-user] i.pca vs. r.covar/m.eigensystem/r.mapcalc

2008-11-05 Thread Dylan Beaudette
On Wed, Nov 5, 2008 at 5:39 AM, Nikos Alexandris [EMAIL PROTECTED] wrote: On Tue, 2008-10-28 at 09:39 -0700, Dylan Beaudette wrote: On Monday 27 October 2008, Nikos Alexandris wrote: My apologies for BUMPing :-) On Sun, 2008-10-12 at 00:20 +0200, Nikos Alexandris wrote: I wanted to

Re: [GRASS-user] i.pca vs. r.covar/m.eigensystem/r.mapcalc

2008-10-28 Thread Dylan Beaudette
On Monday 27 October 2008, Nikos Alexandris wrote: My apologies for BUMPing :-) On Sun, 2008-10-12 at 00:20 +0200, Nikos Alexandris wrote: I wanted to check/verify some i.pca results so I calculated 2 principal components using r.covar, m.eigensystem and r.mapcalc. The results are not the

Re: [GRASS-user] i.pca vs. r.covar/m.eigensystem/r.mapcalc

2008-10-27 Thread Nikos Alexandris
My apologies for BUMPing :-) On Sun, 2008-10-12 at 00:20 +0200, Nikos Alexandris wrote: I wanted to check/verify some i.pca results so I calculated 2 principal components using r.covar, m.eigensystem and r.mapcalc. The results are not the same with i.pca's output. (Maybe this post

[GRASS-user] i.pca vs. r.covar/m.eigensystem/r.mapcalc

2008-10-11 Thread Nikos Alexandris
I wanted to check/verify some i.pca results so I calculated 2 principal components using r.covar, m.eigensystem and r.mapcalc. The results are not the same with i.pca's output. (Maybe this post http://www.nabble.com/Eigen-vectors-tt15686112.html was about the same issue) # i.pca performed on (3)