[R] another question: how to delete one of columes in two ones with high correlation(0.95)

[bbslover]

thank you. I need learn it, after that, maybe I can understant it well.

thank Nikhil

Nikhil Kaza-2 wrote:
> 
> You need  dim(cor.matrix)[1]
> 
> Following might be better instead of a loop, to to get the row ids of  
> a matrix
> 
> (which(cor.matrix >=0.95) %/% dim(cor.matrix)[1])+1
> 
> for column ids use modulus instead of integer divison.
> 
> (which(cor.matrix >=0.95) %% dim(cor.matrix)[1])
> 
> There are probably better ways than this.
> 
> Nikhil
> 
> but probably a better way to do this would be
> 
> On 6 Nov 2009, at 3:16AM, bbslover wrote:
> 
>> for(i in 1:(cor.matrix[1]-1))
>> {
>>  for(j in (i+1):(cor.matrix[2]))
>>   {
>>      if (cor.matrix[i,j]>=0.95)
>>      {
>>          data.f<-data.f[,-i];
>>           i<-i+1
>>      }
>>   }
>> }
> 
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