[R] correlation matricies: getting p-values?

[David Winsemius]

On Jun 28, 2015, at 10:03 AM, David Winsemius wrote:

> 
> On Jun 27, 2015, at 8:06 PM, JAVAD BAYAT wrote:
> 
>> Dear Bill Venables;
>> 
>> Hi, I am using "cor" command to get the correlation coefficients for my data
>> frame. I found somthing in the following site: "
>> <https://stat.ethz.ch/pipermail/r-help/2000-January/009758.html>
>> https://stat.ethz.ch/pipermail/r-help/2000-January/009758.html" . I used
>> your functions to get the p-values for each variables. But I want to use
>> Spearman method for my data frame. 
> 
> You should read the help page for the `cor` function. The adjustment to that code will be very minor once  you understand the available parameters.

I probably should have added a caution about necessarily assuming that the significance probability of the Spearman correlation being different than 0 would be distributed exactly as the Pearson correlation coefficient. There is a cor.test function that includes an option for "spearman". There is also an `rcorr` function in pkg:Hmisc that would do this on one line.

> 
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> -- 
> 
> David Winsemius
> Alameda, CA, USA
> 
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David Winsemius
Alameda, CA, USA