Re: [R] What is wrong with this FOR-loop?

From: Barry Rowlingson <B.Rowlingson_at_lancaster.ac.uk>
Date: Mon 05 Dec 2005 - 23:05:28 EST

Christian Hennig wrote:

>>run_rows<-seq(0,1,0.05)
>>run_cols<-seq(0.3,0.6,0.05)
>>
>>res<-matrix(NA,length(run_rows),length(run_cols))
>>
>>for(i in 1:length(run_rows))
>>{
>> for(j in 1:length(run_cols))
>> {
>> res[i,j]=run_rows[i]+run_cols[j]
>> }
>>}

Or the one-liner:

res = outer(run_rows,run_cols,"+")

but maybe its good to learn about array indexing first...

Barry



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