By default, read.table & friends reads character columns in as factors.
Other options are documented in ?read.table.
If you _really_ want to convert the column to characters, use something
like:
table$desc <- as.character(table$desc)
Two more things:
- You probably meant `==' instead of `=', and that should work even without
converting to characters.
- You should avoid using `table' as an object name, because that's also the
name of a built-in function.
HTH,
Andy
> From: Rory Campbell-Lange
>
> I have done a read.table on a data file with the aim of extracting
> subsets of the data eg
>
> table[table$desc = 'result1',]
>
> How can I convert $desc to a character type? At present it is seen by
> typeof() as an integer.
>
> How can I do the equivalent of
>
> table[table$desc = 'result1' && table$amt > 20, ]
>
> Thanks,
> Rory
>
> --
> Rory Campbell-Lange
> <[EMAIL PROTECTED]>
> <www.campbell-lange.net>
>
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