Talk:Principal Components Analysis: Difference between revisions
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Thanks for the <span style="color:#900000">idea</span>.--[[User:NikosA|Nikos]] 04:54, 16 March 2009 (UTC) | Thanks for the <span style="color:#900000">idea</span>.--[[User:NikosA|Nikos]] 04:54, 16 March 2009 (UTC) | ||
Added examples with SPOT from the Spearfish dataset. Confused about i.pca's performance: there seems to be no problem with the SPOT images, that is, the results of i.pca are almost identical with the results of R's prcomp() *with* centering. This is different than the example using MODIS data. Perhaps it depends on the range of the input data?!--[[User:NikosA|Nikos]] 04:45, 31 March 2009 (UTC) | |||
Revision as of 04:45, 31 March 2009
I have started the PCA-wikipage as suggested by Markus. Apologies for the rough-looking first-draft. --Nikos 00:26, 7 March 2009 (UTC)
Some appearance editing--Nikos 14:18, 8 March 2009 (UTC)
Thanks for the idea.--Nikos 04:54, 16 March 2009 (UTC)
Added examples with SPOT from the Spearfish dataset. Confused about i.pca's performance: there seems to be no problem with the SPOT images, that is, the results of i.pca are almost identical with the results of R's prcomp() *with* centering. This is different than the example using MODIS data. Perhaps it depends on the range of the input data?!--Nikos 04:45, 31 March 2009 (UTC)