Re: [R] cor.test observations limit

[Ming-Chung Li]

This is a note to my second question. I just discovered my data containing
an 'Inf' value and this causes the error I saw when I used rcorr() function
from the Hmisc package. If I delete this observation, everything is fine.

Best,
Ming-Chung

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Re: [R] cor.test observations limit

[Prof Brian Ripley]

Yes.  About 1290 for the Spearman test.

You need (n^3 - n) representable as an integer.

On Tue, 1 Apr 2003, Ming-Chung Li wrote:

 Is there a limit on the number of observations for using cor.test. For
 example,
 
  library(ctest)

That's not needed, and has not been for about 3 years.

  cor.test(rnorm(3000), rnorm(3000), method=spearman)
 Error in if (q  (n^3 - n)/6) pspearman(q - 1, n, lower.tail = FALSE) else
 pspearman(q,  : 
 missing value where logical needed
 In addition: Warning message: 
 NAs introduced by coercion 

-- 
Brian D. Ripley,  [EMAIL PROTECTED]
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel:  +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax:  +44 1865 272595

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