How to convert ordered categorical variable with 4 levels to quantatitve variable

Question

Have an ordered categorical variable with 4 levels that weve treated as a factor with 3 additional indicating variables and have concluded only one is significant and want to reassign this single significant variable to the original variable to make it a quantitative variable to perform PCA

Add some code. What did you try? – mechnicov Mar 24 '19 at 20:45 — mechnicov, Mar 24 '19 at 20:45

score 0 · Answer 1 · answered Mar 24 '19 at 20:36

0

Suppose variable v1 with levels A, B, C, D. You noticed only B is relevant and want to use this information in a PCA (so you need numerical/quantitative variables).

You can build the variable v2 <- 1 * (v1 == 'B').

answered Mar 24 '19 at 20:36

demarsylvain

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How to convert ordered categorical variable with 4 levels to quantatitve variable

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