Dear Anne,
Check out
http://www.nabble.com/correct-way-to-subset-a-vector-to24412577.html#a24412577
for alternatives.
HTH,
Jorge
On Thu, Jul 23, 2009 at 9:49 AM, Anne Skoeries <h...@anne-skoeries.de>wrote:
> Hi there,
>
> I'm trying to remove multiple columns by name from a data.frame. As a
> result I need to get back the modified data.frame without the removed
> columns. My columns I want to delete are listed in a vector called
> "delete".
>
> data <- read.csv2("data.csv")
> delete <- c("col1", "col2", "col3")
>
> newData <- subset(data, select = delete)
> newData <- data[delete]
>
> If I try one of the above shown solutions, it only gives me back the
> columns I want to delete. But I need the exact opposite.
>
> newData <- subset(data, select = -delete)
> newData <- data[-delete]
>
> But as I try the way with a minus I'll get the message: "invalid
> argument to unary operator"
>
> There must be a simple way to delete all of the columns, but I just
> don't get it.
> Thanks for your help,
> --
> Anne Skoeries
>
>
>
> [[alternative HTML version deleted]]
>
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>
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