What function are you using to read in your data file?
If read.table, then see the help page for that function, specifically
the colClasses argument "NULL".
Erik
kayj wrote:
I have a huge txt file and I only want to get out of it column 3 and 7.
I tried to read the whole file and then extract the two columns, but I ran
into a memory problem since the file is huge.
Is it possible just to tell R to read these two columns without reading the
whole file?
Thanks
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