I need to analyze my data with PCA in R (version 3.3.2) , and the tutorial I have from an older version seems will not apply.
I imported the data into .xlsx
and according to what I know, I need to select the numeric data for analysis in PCA using the package stats
, taking out the rows and columns that name the variables.
The commands I had to test are: dadosnumericos <- dados[,3:25]
, as an example, and several error messages appear.