[R] Correlation matrix
Uwe Ligges
ligges at statistik.uni-dortmund.de
Wed May 3 13:31:57 CEST 2006
Arun Kumar Saha wrote:
> Dear R users,
>
> Suppose I have a 4*5 data frame like this:
>
> Date x1 x2 x3 x4
> 1/1/2004 100 22 12 34
> 2/1/2004 33 -22 33 12
> 3/1/2004 12 12 -11 5
> 4/1/2004 1 223 22 1
>
> Now I want to get a correlation matrix for this dataset excluding column-1
> and column-3 i.e. I want to get a correlation matrix for variables x1, x3,
> x4. I know that if this dataframe has only three columns containing x1, x3
> and x4 instead of five columns then I can use "cor" function. If anyone give
> me any code for doing this I will be very grateful
>
cor(dat[,-c(1,3)]
Uwe Ligges
> Thanks,
> Arun
>
> [[alternative HTML version deleted]]
>
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