how can I do PCA on a table ?

14 次查看（过去 30 天）
LO
LO 2019-5-30
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 ?

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2019-5-30
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.
  4 个评论
显示 2更早的评论
LO
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
Star Strider 2019-6-7
It should work in that instance.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Dimensionality Reduction and Feature Extraction 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by