On Jan 2, 2012, at 10:42 AM, David Winsemius wrote:
On Jan 2, 2012, at 4:11 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.
https://stat.ethz.ch/pipermail/r-help/2008-November/178808.html
looked
promising but didn't do what I had intended
(I think the results of interaction( variable1.fac = 0 ,
variable2.num = 0) should have dome very nicely, but if you wanted
them a naked numbers then this would have also givne satisfaction:
var3 <- as.numeric( interaction( variable1.fac = 0 , variable2.num =
0) )
Well that should be filed under embarrassing contributions. Try instead:
var3 <- as.numeric( interaction( variable1.fac == 1 , variable2.num
>= 1) )
--
David
David Winsemius, MD
West Hartford, CT
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