[GRASS-user] Calculating eigen values and % variance explained after PCA analysis

Moritz Lennert mlennert at club.worldonline.be
Wed Feb 25 11:50:46 EST 2009


On 25/02/09 14:33, Nikos Alexandris wrote:
> Wesley:
>> I see that I would need to upgrade to 6.4 using svn. I currently
>> install using synaptic, does this mean I need to compile from source
>> and then add the m.eigensystem addon?
>> Not sure about f77, is this a fortran compiler? I have gfortran
>> compiler version 4.2.3, will this do?
> 
> (@Hamish: apologies for the interference :-p)
> 
> Wesley,
> 
> perhaps it's better to upgrade to 6.4 (or why not to grass6_devel =
> grass65 ?). grass needs to be compiled first (don't install), then
> compile m.eigensystem and install in the end grass.

I don't know whether this was already implemented in 6.3, but nowadays 
one does not need to the source code, nor compiling GRASS by oneself to 
be able to add add-ons. On Debian, you can just install the grass-dev 
package and then use something like:

make MODULE_TOPDIR=/usr/lib/grass

Moritz



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