Not sure about how to have read.csv
interpret it properly, but you can use gsub
to replace ","
with ""
, and then convert the string to numeric
using as.numeric
:
y <- c("1,200","20,000","100","12,111")
as.numeric(gsub(",", "", y))
# [1] 1200 20000 100 12111
This was also answered previously on R-Help (and in Q2 here).
Alternatively, you can pre-process the file, for instance with sed
in unix.