r - Use grep to parse column names -

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there data frame want delete columns in there string xfl or xst in colname. colname not exclusively xfl can ktel_xfl or ktel_xst. know there has way grep?

here's approach:

# create cloumn index idx <- grep("x(fl|st)", colnames(dat), invert = true) # filter columns dat[idx]

where dat name of data frame.


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