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Jasmax
Jasmax
Level I

PCA - how to find component scores (X,Y coordinates) for each point on plot?

Apr 26, 2017 01:03 PM (3475 views)

I'm using JMP 13.0, on a Mac to run Princple Component Analysis (PCA) on environmental data.

 

It's working fine, however I can't seem to find any option to display the X,Y coordinates (PCA scores) for each point on the plot. My plot contains ~50 data points, from several different treatment groups. I'm hoping to calculate a mean value and standard deviation, for PC1 and PC2, for each treatment group, so I can create a new figure displaying average differences between treatment groups along the PC axes. 

 

I think I've tried every drop-down display option for PCA and I cannot find these values anywhere. I've seen plenty of data displayed this way, so it seems like it should be an option in JMP. I also know that R can generate this report. 

 

Can anyone tell me where I can find this information? Thanks.

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1 REPLY 1
KarenC
Super User (Alumni) KarenC
Super User (Alumni)

Re: PCA - how to find component scores (X,Y coordinates) for each point on plot?

Apr 26, 2017 09:10 PM (3427 views)  |  Posted in reply to message from Jasmax 04-26-2017

There is an option to save the PC to your data table. Is that what you are looking for?  The help files for PCA are located at this link:

 

file:///Applications/JMP%20Pro%2013.app/Contents/Resources/en.lproj/JMPHelp/index.html#page/jmp%2FMM_Principal_Components.html%23

 

 

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