No subject

[grass-lists-owner at max.cecer.army.mil]

***** UNDELIVERABLE MAIL sent to csun, being returned by zircon.nr.usu.edu!dharris *****
mail: Error # 2 'Problem with mailfile' encountered on system zircon.nr.usu.edu

Received: from max.cecer.army.mil by zircon.nr.usu.edu via SMTP (920330.SGI/920502.SGI.AUTO)
	for csun id AA02865; Tue, 30 Nov 93 14:19:04 -0700
Received: from amber.cecer.army.mil by max.cecer.army.mil with SMTP id AA12409
  (5.67a/IDA-1.5 for <csun at zircon.nr.usu.edu>); Tue, 30 Nov 1993 15:18:38 -0600
Received: from max.cecer.army.mil by amber.cecer.army.mil (4.1/SMI-4.1)
	id AA10770; Tue, 30 Nov 93 15:09:23 CST
Received: from zorro.cecer.army.mil by max.cecer.army.mil with SMTP id AA12270
  (5.67a/IDA-1.5 for <grassu-people at max.cecer.army.mil>); Tue, 30 Nov 1993 15:09:23 -0600
Received: from amber.cecer.army.mil by zorro.cecer.army.mil with SMTP id AA12234
  (5.67a/IDA-1.4.4 for <grassu-people>); Tue, 30 Nov 1993 15:09:20 -0600
Received: from max.cecer.army.mil by amber.cecer.army.mil (4.1/SMI-4.1)
	id AA10764; Tue, 30 Nov 93 15:09:17 CST
Received: from zorro.cecer.army.mil by max.cecer.army.mil with SMTP id AA12265
  (5.67a/IDA-1.5 for <grassu-list at max.cecer.army.mil>); Tue, 30 Nov 1993 15:09:18 -0600
Received: from amber.cecer.army.mil by zorro.cecer.army.mil with SMTP id AA12228
  (5.67a/IDA-1.4.4 for <grassu-list at max.cecer.army.mil>); Tue, 30 Nov 1993 15:09:15 -0600
Date: Tue, 30 Nov 1993 15:09:15 -0600
From: Olga Waupotitsch <olga at zorro.cecer.army.mil>
Message-Id: <199311302109.AA12228 at zorro.cecer.army.mil>
Received: by amber.cecer.army.mil (4.1/SMI-4.1)
	id AA10762; Tue, 30 Nov 93 15:09:14 CST
Sender: grass-lists-owner at max.cecer.army.mil
Reply-To: grassu-list at max.cecer.army.mil
Precedence: Bulk
Sender: grass-lists-owner at moon.cecer.army.mil.
Reply-To: grassu-list at moon.cecer.army.mil.
Precedence: Bulk
To: grassu-list at max.cecer.army.mil
Subject: Re: PCA problem
Newsgroups: info.grass.user
References: <Pine.3.07.9311301342.A27797-a100000 at felix.geog.mcgill.ca>

In info.grass.user you write:

>Hello Grass Users

>Last week I posted a query about being able to access
>the eigenvectors/eigenvalues for my principal
>components. I then followed Agus' suggestion to use
>m.eigensystem on the output of r.covar. However, I
>whenever I try to pipe the r.covar output file into
>the eigensystem module using 
>	m.eigensystem < inputfile
>I get the error message "This command must be run
>interactively". I also get the same error message
>when I try to pipe directly from r.covar to
>m.eigensystem using
>(echo 3: r.covar map.1,map.2,map.3) | m.eigensystem

>Is there some way of being able to input the (often
>long) covariance matrix into m.eigensystem, without
>having to type in all of the values manually?

>Thanks
>Lesley-Ann Dupigny.

Go to src/imagery/i.pca/cmd
in file main.c
delete lines 216 and 226 (i.e. uncomment lines 217-225, which
print out eigen values and eigen vectors)
then run gmake4.1 in this directory
Olga