R help - Jul 2009 - Rcorr

Hi,
I've just run an rcorr on some data in Spearman's mode and it's just
produced the following values;
      [,1]  [,2]
[1,]  1.00 -0.55
[2,] -0.55  1.00

n= 46


P
     [,1] [,2]
[1,]       0
[2,]  0

I presume this means the p-value is lower than 0.00005, but is there any
way of increasing the number of significant figures used? How should I
interpret this value?

Cheers
Jim

James Allsopp wrote:
> Hi,
> I've just run an rcorr on some data in Spearman's mode and it's
just
> produced the following values;
>       [,1]  [,2]
> [1,]  1.00 -0.55
> [2,] -0.55  1.00
> 
> n= 46
> 
> 
> P
>      [,1] [,2]
> [1,]       0
> [2,]  0
> 
> I presume this means the p-value is lower than 0.00005, but is there any
> way of increasing the number of significant figures used? How should I
> interpret this value?
> 
> Cheers
> Jim
> 
Try options(digits=15) before running rcorr().

-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University