[R] Converting column of strings to boolean
ruipbarradas at sapo.pt
Sun Jan 27 12:23:40 CET 2013
Something like this?
x <- sample(c("red", "blue", "green", "yellow"), 100, replace = TRUE)
cnames <- unique(x)
sapply(cnames, function(.x) x == .x)
Hope this helps,
Em 26-01-2013 22:25, domcastro escreveu:
> I'm trying to convert a column of strings (nominal types) to a set of
> boolean / binary / logical values. For example, in the column there is red,
> blue, green and yellow. There are 100 rows and each has a colour. I want to
> convert the column to 4 columns: red, blue, green,yellow and then either 1
> or 0 put in the relevant row.
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