Dear Manli,
Try this:
table1[table1$treatment==low table1$size==large,]
HTH,
Jorge
On Tue, Jun 3, 2008 at 11:19 PM, Manli Yan [EMAIL PROTECTED] wrote:
a table with three varialbe:treatment
(low,high),size(large,small),response y
I want all response y with treatment=low and size=large,
I try to write as :
treatment-c(low,low,high,high)
size-c(small,large,small,large)
y-c(1,2,4,5)
table1-data.frame(treatment,size,y)
x=table1$y(treatment==low size==large)
this does not work out~
thank you for the help~
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