If the number of datasets for a* is small (here is 3), it is ok for creating
b_ijn[i, j, nn] and make assignments to it. But it will be a little bit
impossible for a larger number of datasets for a*, say 999. We may need 999
lines to do this. Maybe there are other alternatives.
2010/1/18 David Winsemius <dwinsem...@comcast.net>
>
> 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,
>> for (nn in 1:3) {
>> b_nn[i,j]<-rank(c(a1[i,j]:a3[i,j]))[nn]
>> }
>> Anybody can tell me the correct method to specify the above codes?
>>
>
> There is no correct method. 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. 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
>>
>> [[alternative HTML version deleted]]
>>
>>
>> ______________________________________________
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>> 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.
>>
>
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
>
>
--
-----------------
Jane Chang
Queen's
[[alternative HTML version deleted]]
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