[R] Simple question, I think

[Chuck Cleland]

On 10/22/2009 12:37 PM, David Kaplan wrote:
> Greetings,
> 
> I am recoding a dummy variable (coded 1,0) so that 0 = 2.  I am using
> the line
> 
> sciach$dummyba[sciach$ba==0] <- 2
> 
> I notice that it creates a new column dummyba, with 0 coded as 2 but
> with 1's now coded as NA.  Is there a simple way around this in the line
> I am using, or do I need to have an additional line
> 
> sciach$dummyba[sciach$ba==1] <- 1

  You might do the recoding like this:

with(sciach, ifelse(ba == 0, 2, ifelse(ba == 1, 1, NA)))

  or like this:

sciach$ba * -1 + 2

> Thanks in advance. 
> 
> David
> 
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-- 
Chuck Cleland, Ph.D.
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