R help - Jun 2010 - cor.test() -- how to get the value of a coefficient

Hi, all.

Yet another beginner to R : )

I wonder, how it's possible to get the value of a coefficient from the
object produced by cor.test() ?
> cor.test(a, b, method="spearman")
	Spearman's rank correlation rho

data:  a and b
S = 21554.28, p-value = 2.496e-11
alternative hypothesis: true rho is not equal to 0
sample estimates:
      rho
0.6807955

Warning message:
In cor.test.default(a, b, method = "spearman") :
  Cannot compute exact p-values with ties


So, I'd like to do something like :
> result = cor.test(...)
> rho = result.rho()
-- in order to save then the value in some format into external file.

Thanks in advance for helping !

Regards,
Kate.

result <- cor.test(a,b,method="spearman")
result$estimate

Cheers
Joris

On Tue, Jun 8, 2010 at 10:40 PM, Ekaterina Pek <ekaterina.pek at
gmail.com> wrote:
> Hi, all.
>
> Yet another beginner to R : )
>
> I wonder, how it's possible to get the value of a coefficient from the
> object produced by cor.test() ?
>
>> cor.test(a, b, method="spearman")
>
> ? ? ? ?Spearman's rank correlation rho
>
> data: ?a and b
> S = 21554.28, p-value = 2.496e-11
> alternative hypothesis: true rho is not equal to 0
> sample estimates:
> ? ? ?rho
> 0.6807955
>
> Warning message:
> In cor.test.default(a, b, method = "spearman") :
> ?Cannot compute exact p-values with ties
>
>
> So, I'd like to do something like :
>
>> result = cor.test(...)
>> rho = result.rho()
>
> -- in order to save then the value in some format into external file.
>
> Thanks in advance for helping !
>
> Regards,
> Kate.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Joris Meys
Statistical consultant

Ghent University
Faculty of Bioscience Engineering
Department of Applied mathematics, biometrics and process control

tel : +32 9 264 59 87
Joris.Meys at Ugent.be
-------------------------------
Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php

Ekaterina Pek wrote:
> Hi, all.
> 
> Yet another beginner to R : )
> 
> I wonder, how it's possible to get the value of a coefficient from the
> object produced by cor.test() ?
> 
>> cor.test(a, b, method="spearman")
> 
You can always assign the value of a function to a variable, and then 
use ?str to see the structure of that object.

x <- cor.test(a, b, method = "spearman")

str(x)