Drop a list of columns from data frame

Question

Possible Duplicate:
Drop Columns R Data frame

I have a list of variables I would like to drop from IRIS table as follow:

dropList <- c("Sepal.Length", "Sepal.Width")

How I can use this list to drop from IRIS data frame? (I don't want to refer to positions explicitly)

Thanks.

score 8 · Answer 1 · answered Nov 26 '12 at 03:43

8

There's some other ways you can do this, like using the select argument of subset, but if dropList is coming to you as a character vector from somewhere else, this works pretty well.

data(iris)
dropList <- c("Sepal.Length", "Sepal.Width")
iris2 <- iris[, !colnames(iris) %in% dropList]

answered Nov 26 '12 at 03:43

Marius

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You don't actually need `data(iris)` - it's loaded lazily for you – Dason Nov 26 '12 at 03:44
Thank you so much. It saves me so much time – AdamNYC Nov 26 '12 at 03:53

Drop a list of columns from data frame

1 Answers1