Re: [Ifeffit] "PCA not enabled" on Mac version of Demeter: Athena

Bruce and Frank, Thank you for looking into this. Please let me know if there is any more information I can provide that would be helpful in identifying the problem. Regards, Ellen On Fri, Oct 3, 2014 at 1:15 PM, Schima, Frank wrote:

Hi all,

While I’m unsure what PCA is, PDL and PDL::Stats are available and installed with Demeter(-devel) in Macports.

$ port installed | grep pdl p5.16-pdl @2.7.0_5 (active) p5.16-pdl-stats @0.6.5_0 (active)

I don’t have an explanation for what the problem might be. I won’t be able to look into this until Monday at the earliest.

Cheers! Frank

On Oct 3, 2014, at 1:01 PM, Bruce Ravel wrote:

Ellen,

There is no a priori reason that PCA should not be available. That said, Athena is careful to fail gracefully (i.e. with that message displayed) when it fails to find the bits that make PCA happen.

My guess is it's a packaging issue on MacPorts. Let's ask Frank!

Frank,

Are PDL and PDL::Stats dependencies for the Demeter package on MacPorts?

A quick perusal of the available ports at macports.org suggests that there may not be a package for PDL::Stats for the version of Perl you are using. That seems rectifiable....

Thanks, B

On 10/03/2014 02:50 PM, Ellen Daugherty wrote:

Hello XAFS community,

I recently upgraded to the new version of Demeter (0.9.20) for Mac and am trying to run principal components analysis on my spectra. When I click on "Principle components analysis" from the main menu, the window shows the following message: "PCA is not enabled on this computer. The most likely reason is that the perl modules PDL and/or PDL::Stats are not available."

Perhaps the solution here is simple, but I am not familiar with perl modules and do not understand the source of the issue. I could not find information about this problem in the Mail Archive, though I may have missed something. Do I need to download the PDL perl modules separately from the Demeter installation? Could there be files that are not located in the proper directory? Or perhaps PCA is simply not available for Macs?

Please let me know if further information would help in solving this problem.

Thank you!

Ellen

-- Graduate Student Research Assistant Department of Chemistry Colorado State University

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-- Bruce Ravel ------------------------------------ bravel@bnl.gov

National Institute of Standards and Technology Synchrotron Science Group at NSLS --- Beamlines U7A, X24A, X23A2 Building 535A Upton NY, 11973

Homepage: http://bruceravel.github.io/home/ Software: https://github.com/bruceravel Demeter: http://bruceravel.github.io/demeter/

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