[R] using as.POSIXlt on multiple columns or multiple objects

From: Farrel Buchinsky <fjbuch_at_gmail.com>
Date: Wed, 04 Jun 2008 18:06:24 -0400

If I want to convert one column to date and time format that R can understand and manipulate then I would do this


But what happens if I have many such columns and I do not want to have my code be stuffed with 10 similar lines (one for each variable aka column aka vector aka object)

I thought I could be clear and use the list function and do this. list(initial$Started ,initial$Finished,full.ques$started.ful
,full.ques$finished.ful) <- lapply(list(initial$Started

But I got:
Error in list(initial$Started, initial$Finished, full.ques$started.ful, :   could not find function "list<-"

I am clearly missing some basic R issue here. What am I missing?

Farrel Buchinsky

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Received on Wed 04 Jun 2008 - 22:36:25 GMT

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