how can I do PCA on a table ?

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LO 2019-5-30

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评论： Star Strider 2019-6-7

I have a 3000 x 18 table containing 18 variables (one per column) of both numerical and categorical type (6 categorical).

I would liket to do PCA on the whole dataset

but the command

[coeff,score]=pca(mytable) does not work.

any idea on how to proceed ?

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Star Strider 2019-5-30

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The pca function only accepts single-precision or double-precision numerical arrays. You most likely need to use the table2array (link) function first, to get the numeric data out of your table and into a form that pca can use.

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LO 2019-6-7

Got it, thanks. I thought categorical PCA was also possible with MATLAB.

Perhaps the answer is no. I will try to then exclude the non numerical variables and see if it works !

Star Strider 2019-6-7

It should work in that instance.

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