[R] Turning off warnings from cor.test

[Martin Maechler]

>>>>> "DR" == Dimitris Rizopoulos <d.rizopoulos at erasmusmc.nl>
>>>>>     on Fri, 17 Apr 2009 09:44:49 +0200 writes:

    DR> check option 'warn' in the on-line help file of ?options(), e.g., you 
    DR> can use something like this:

    DR> op <- options(warn = (-1)) # suppress warnings

    DR> cor.test(c(1,2,3,3,4,5), c(1,2,3,3,4,5),  method = "spearman")

    DR> options(op) # reset the default value, if you want

[yes, do that!]

To make this more self-contained and error-proof, there
has been the function  suppressWarnings(.)  for several years now.
Hence, I'd strongly recommend

    suppressWarnings( cor.test(c(1,2,3,3,4,5), c(1,2,3,3,4,5),
                               method = "spearman") )

instead of the above.
Regards,
Martin Maechler, ETH Zurich

    DR> I hope it helps.

    DR> Best,
    DR> Dimitris


    DR> Daren Tan wrote:
    >> I would like to turn off the warnings from cor.test while retaining
    >> exact=NULL. Is that possible ?
    >> 
    >>> cor.test(c(1,2,3,3,4,5), c(1,2,3,3,4,5),  method = "spearman")
    >> 
    >> Spearman's rank correlation rho
    >> 
    >> data:  c(1, 2, 3, 3, 4, 5) and c(1, 2, 3, 3, 4, 5)
    >> S = 0, p-value < 2.2e-16
    >> alternative hypothesis: true rho is not equal to 0
    >> sample estimates:
    >> rho
    >> 1
    >> 
    >> Warning message:
    >> In cor.test.default(c(1, 2, 3, 3, 4, 5), c(1, 2, 3, 3, 4, 5), method =
    >> "spearman") :
    >> Cannot compute exact p-values with ties
    >> 
    >> ______________________________________________
    >> 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.
    >> 

    DR> -- 
    DR> Dimitris Rizopoulos
    DR> Assistant Professor
    DR> Department of Biostatistics
    DR> Erasmus University Medical Center

    DR> Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
    DR> Tel: +31/(0)10/7043478
    DR> Fax: +31/(0)10/7043014

    DR> ______________________________________________
    DR> R-help at r-project.org mailing list
    DR> https://stat.ethz.ch/mailman/listinfo/r-help
    DR> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
    DR> and provide commented, minimal, self-contained, reproducible code.