topic Re: PCA - create loading matrix for each sample, instead of for each variable in Discussions

PCA - create loading matrix for each sample, instead of for each variable

efisch12 — Sat, 10 Jun 2023 23:54:51 GMT

Is there a way to view a loading matrix for each sample, showing the variation of each element? I envision a different table for each principal component.

The picture is an example of the table I need. The PCA was run for all of the elements in the table, but for 17 samples.

Thank you!!

(I am using the most recent version of JMPpro)

Re: PCA - create loading matrix for each sample, instead of for each variable

ih — Mon, 03 Oct 2022 22:34:22 GMT

I think there is some confusion here: loadings would not change for each sample, they are the same for the entire table. I think you might be looking for the score contributions, and you can see those using the MDMCC platform. After launching the platform using scores saved from PLS, look for Monitor the Process > Score Plot, and then hover over a point in the scatterplot, or look at the contributions heat map. Here is an example:

(view in My Videos)

Re: PCA - create loading matrix for each sample, instead of for each variable

efisch12 — Tue, 04 Oct 2022 16:46:59 GMT

That is what I am looking for, thank you very much!