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spa
2009 Apr 02
0
Sparse PCA problem
Dear R user,
I want to do sparse principal component analysis
(spca). I am using elastic net package for this and spca() and the code is
following from the example.
My question is How can I decide the *K =? *and *para=c(7,4,4,1,1,1)) . So,
here k=6 i.e the no of Principal Components. and each pcs say , *
**
pc1 number of non zero loading is 7
pc2 number of non ze...
2012 Nov 21
1
Listing elements of a 4D array
Dear list,
I'm having trouble to see how my elements on a 4 dimensional array are
listed.
For example, I generated the following array:
junk.melt=melt(occ.data,id.var=c("Especie", "Site", "Rep", "Año"),
measure.var="Pres")
y=cast(junk.melt, Site ~ Rep ~ Especie ~ Año)
Now, I want to be able to look at how my species (Especie) are listed, in