[R] cor() btwn columns in two matrices - no complete element pairs

[rcoder]

Hi Daniel,

Thanks for your reply. I experimented with various options since my poet and
eventually tried use="pairwise.complete.obs" which seemed to do the trick.

Thanks,

rcoder



Daniel Malter wrote:
> 
> Hi,
> 
> the argument use should be: use="p" (for pairwise complete obs.)
> 
> Daniel
>  
> 
> 
> -------------------------
> cuncta stricte discussurus
> -------------------------
> 
> -----Ursprüngliche Nachricht-----
> Von: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Im
> Auftrag von rcoder
> Gesendet: Friday, August 15, 2008 9:45 AM
> An: r-help at r-project.org
> Betreff: [R] cor() btwn columns in two matrices - no complete element
> pairs
> 
> 
> Hi everyone,
> 
> I'm trying to calculate correlation coefficients between corresponding
> columns in two matrices with identical dimensions but different data. The
> problem is that the matrices contain NAs in different locations. I am
> using
> the following code to try to calculate correlations between complete sets
> of
> data:
> 
> #Code start
> maxcol<-ncol(mat1)
> for (i in 1:maxcol)
> 	{
> corr_results[1,i]<-cor(mat1[,i],mat2[,i], use="complete.obs")
> 	}
> #Code end
> 
> ...but I get the following error message:
> 
> Error in cor(mat1[,i], mat2[,i], use="complete.obs") : 
>   no complete element pairs
> 
> Is there something I'm not including in the 'cor' parentheses? I apologise
> for not including the true original data frames.
> 
> Thanks,
> 
> rcoder
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