On Jan 18, 2010, at 7:58 PM, David Winsemius wrote:
On Jan 18, 2010, at 7:19 PM, rusers.sh wrote:
Hi,
See example.
for (i in 1:2) {
for (j in 1:3) {
b_1[i,j]<-rank(c(a1[i,j],a2[i,j],a3[i,j]))[1]
b_2[i,j]<-rank(c(a1[i,j],a2[i,j],a3[i,j]))[2]
b_3[i,j]<-rank(c(a1[i,j],a2[i,j],a3[i,j]))[3]
}
}
The inner codes is really repeated, so i want to change the inner
codes
into loops. Take nn is from 1 to 3,
something like,
Anybody can tell me the correct method to specify the above codes?
There is no correct method.
I take that back.
You cannot index on the object name b_nn that way. R has not been
developing using a syntax with that much flexibility. If you want a
3D array of values, then you could create b_ijn[i, j, nn] and make
assignments to it.
You could make a list of matrices:
for (nn in 1:3) {
bn[[nn]] <- b[i,j] <- rank(c(a1[i,j]:a3[i,j]))[nn]
# assuming that your right hand construction is meaningful,,,,
impossible to tell without an example.
}
But if you tried to do this with paste and assign, you will spending
considerably more time degbugging it than it is worth and it would
likely be more inefficient than what you have.
--
David.
Thanks.
--
-----------------
Jane Chang
Queen's
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David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
