Principal Component Analysis using GIS

[DeliweNgwezi]

Hi,

My name is Deliwe. I would like to find out how does one perform Principal Component Analysis using spatial analyst in ArcGIS. I need to apply this analysis for my research project?  Are there any  web courses on this type of analysis? I will appreciate your help.
Thanks
Deliwe

[JeffreyEvans]

Deliwe,
PCA, in this context, is primarily used for data reduction and not inference. That is to say, maximize the information content in a stack of images to the first few bands. There is really no "analysis" per se.  

Here is a link to performing PCA in ArcGIS. http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000pq000000.htm

[DeliweNgwezi]

Hi Jeffrey,

Thank you for the advice and the link, I will check it out.

Deliwe