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jmpnewbie1
jmpnewbie1
Level I

Normalize data Columns for PCA

Created: Jun 29, 2021 09:44 AM  |  Last Modified: Jun 10, 2023 4:32 PM (1215 views)

I am being asked to normalize sensor data with respect to one of my columns before I run a PCA. It was mentioned that there was a checkbox or something to do this in JMP. Is that true? Or do I need to do it manually column by column. 

 

Any help would be great! 

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1 REPLY 1
Mark_Bailey
Staff Mark_Bailey
Staff

Re: Normalize data Columns for PCA

Jun 29, 2021 10:16 AM (1204 views)  |  Posted in reply to message from jmpnewbie1 06-29-2021

The default analysis for Analyze > Multivariate Methods > Principal Components is PCs on correlations. That means that the centering and scaling happens automatically. Using the option to compute PCs on covariances would not center or scale the variables.

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