Could it be
if(variable1.fac == 0 & variable2.num == 0) {variable3 = 1} #
brackets {} aren't strictly required for a one liner.
if(variable1.fac == 0 & variable2.num >= 0) {variable3 = 2} #
brackets {} aren't strictly required for a one liner.
if(variable1.fac == 1 & variable2.num == 0) {variable3 = 3} #
brackets {} aren't strictly required for a one liner.
if(variable1.fac == 1 & variable2.num >= 1) {variable3 = 4} #
brackets {} aren't strictly required for a one liner.
On 1/2/2012 2:11 AM, Richard Kolodziej wrote:
> Hello,
>
> I'm using SPSS at work but really would like to switch to R. Right now I'm
> trying to learn R in reproducing calculations I did with SPSS but am stuck
> with something that is quite simple and comprehensible in SPSS-Syntax:
>
> IF (variable1.fac = 0 AND variable2.num = 0) variable3=1.
> IF (variable1.fac = 0 AND variable2.num>= 1) variable3=2.
> IF (variable1.fac = 1 AND variable2.num = 0) variable3=3.
> IF (variable1.fac = 1 AND variable2.num>= 1) variable3=4.
>
> I want to create four different groups out of different conditions of two
> variables:
> * variable1.fac is a factor coded with 0 and 1
> * variable2.num is a numerical variable with only whole numbers
>
> My problem with R is that I can't find a way to use AND in an IF statement
> that doesn't produce an error or not intended solutions.
>
> "An Introduction to R" is really unhelpful with this problem and I wouldn't
> have written here, if I didn't have searched for the answer.
>
> http://tolstoy.newcastle.edu.au/R/help/05/09/12136.html was helpful in
> understanding how the IF statement is written in R but didn't answer my
> question how to add an usable AND (&, |)
> https://stat.ethz.ch/pipermail/r-help/2008-November/178808.html looked
> promising but didn't do what I had intended
>
> Thanks in advance,
> Richard
>
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>
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