[Ifeffit] PCA

[ebrown at slc.edu]

I've just started doing EXAFS analysis and I have a few questions.  I
imported EXAFS data (prepared by Athena) into SixPack and ran a principle
component analysis on the date.  I then ran some target transforms of the
dominant components targeting different compounds we thought could be part
of the data.  This has yielded some extremely useful indicators of which
compounds are most likely in the sample.

However, there's a limited amount of information available from the
SixPack PCA.  Is there any way to find out information about the makeup of
components?  The "Save Components" option doesn't work.  Also, for the
target transform feature:  is there any way to find out how much of each
component is used to make the transform?  Presumably, this information
would need to be calculated in order to make the transform in the first
place, but I can't find any way to access that information.

I've found SixPack very helpful, but if there's other PCA's that provide
these features, that would also be useful.

Thanks,
Ethan Brown