[R] Quick Question about R

[Chuck Cleland]

Konrad wrote:
> Hello,
> Is there a way to convert a character to a number with out getting a warning?  I have a vector that has both numbers and letters in it and I need to convert it to only numbers.  At the moment I'm using as.numeric but it is generating a warning when it converts a letter.  Is there another function out there that will do what I need or is there a way to turn off the warnings as I don't want the warning to be displayed to the end user?

?options

options(warn = -1)

as.numeric(c("1","A","2"))
[1]  1 NA  2

options(warn = 0) # return to default

> Konrad Hammel
> Engineer
> Prilink LTD
> konrad.hammel at prilink.com
> 905.305.1096
> 
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Chuck Cleland, Ph.D.
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