Something strange in cor.test in R-1.8.0 (PR#4718)
maechler writes:
"Duncan" == Duncan Murdoch <dmurdoch@pair.com>
on Wed, 22 Oct 2003 08:17:32 -0400 writes:
Duncan> I've now tried the code
set.seed(1) x <- rnorm(50) y <- rnorm(50) cor.test(x,y,method="spearman") x <- rnorm(50) y <- rnorm(50) cor.test(x,y,method="spearman")
Duncan> in r-patched (which gives apparently correct results), and r-devel, Duncan> which gives the first result correct, the second incorrect; when Duncan> repeated, both are bad.
Hmm, funny.
I get repeatable results in in R 1.7.1 , 1.8.0, R-patched and R-devel (all on Linux),
with an (ugly but convenient) 1-liner :
set.seed(1); for(k in 1:2){x <- rnorm(50);y <- rnorm(50);print(unlist(cor.test(x,y,method="spearman")[1:4]))}
statistic.S p.value estimate.rho 23640.0000000 0.3482088 -0.1351741 statistic.S p.value estimate.rho 1.724800e+04 2.322263e-01 1.717647e-01
I get the same on Debian GNU/Linux. Where do we stand on this? Windows-specific? -k