[GRASS-user] i.pca with scrips

[Gaspar]

I had a fatal error when writing the script, I omitted the B6 = 6 and
$map$B6, and B5=6 is bad. I fixed the script. The script is now working
perfectly. Another question: Your I could suggest improvements to the
scripts, to make it more compact: for example, you can use "*" instead
B1=1 B2=2 B3=3 etc.


Thanks Markus Metz

# SCRIPS GOOD EXAMPLE:
#!/bin/bash
# Analisis de componentes principales 
 
for map in tmedia_ aston_ clor_
do

B1=1
B2=2
B3=3
B4=4
B5=5
B6=6
B7=7
B8=8
B9=9
B10=10
B11=11
B12=12

i.pca rescale=0,0 input="$map$B1,$map$B2,$map$B3,$map$B4,$map$B5,$map
$B6,$map$B7,$map$B8,$map$B9,$map$B10,$map$B11,$map$B12" output=PCA_$map


El lun, 04-07-2011 a las 20:49 +0200, Markus Metz escribió:
> On Mon, Jul 4, 2011 at 8:43 PM, Gaspar <gos47 en hotmail.com> wrote:
> > Dear Grass users
> >
> > I am trying to run the principal components analysis with "i.pca" for 12
> > raster.
> >
> > I made a script to process three times the "i.pca" with three sets
> > (twelve raster by each  sets) of different parameters (temperature,
> > chlorophyll, Insolation), but when I run the scripts this only takes 11
> > images by sets. I tried i.pc manually and this takes twelve raster
> > correctly. Thank you in advance.
> >
> > EXAMPLES WHIT SCRIP:
> >
> > GRASS 6.4.1 > i.pca_.sh
> > .
> > .
> > .
> > Computing means for band 11...
> >  100%
> > Computing row 1 (of 11) of covariance matrix...
> >
> > EXAMPLES MANUALLY FOR ONE SET:
> >
> > GRASS 6.4.1 >
> > input=tmedia_1,tmedia_2,tmedia_3,tmedia_4,tmedia_5,tmedia_6,tmedia_7,tmedia_8,tmedia_9,tmedia_10,tmedia_11,tmedia_12 output=PCA_tmedia_
> >
> > Computing means for band 12...
> >  100%
> > Computing row 1 (of 12) of covariance matrix...
> >
> >
> > EXAMPLE SCRIPS
> >
> > #!/bin/bash
> >
> > # Analisis de componentes principales
> >
> > for map in tmedia_ aston_ clor_
> > do
> >
> > B1=1
> > B2=2
> > B3=3
> > B4=4
> > B5=5
> > B5=6
> > B7=7
> > B8=8
> > B9=9
> > B10=10
> > B11=11
> > B12=12
> >
> > i.pca rescale=0,0 input="$map$B1,$map$B2,$map$B3,$map$B4,$map$B5,$map
> > $B7,$map$B8,$map$B9,$map$B10,$map$B11,$map$B12" output=PCA_$map
> >
> 
> Is $map$B6 really missing in the script or is it just a typo above?
>