How do I name rows

Question

I have a data set hdata(as picture1 shows):

row names were automatically given by R How do I name rows by y1 to y6 instead of v1 to v6 given by R?

Answer 1

We can change the column names with paste

colnames(hdata) <- paste0('y', seq_along(hdata))

Or use sub

colnames(hdata) <- sub('v', 'y', colnames(hdata))