This has to do with using pipe() and grep and read.csv()
I have a .csv file that I grep using pipe() and read.csv() as follows:
read.csv(pipe('grep foo bar.csv'))
However, is there a way to have this command run when for example,
there is no "foo" text in the bar.csv file? I get an error message
(appropriately):
Error in read.table(file = file, header = header, sep = sep, quote = quote, :
no lines available in input
Is there a way to "inspect" the output of pipe before passing it on to
read.csv()?
Thanks,
Andrew
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