[R] Peculiarity in non-central qchisq for ncp > 294.92 ...

Andrew Robinson andrewr at uidaho.edu
Sun Apr 13 23:16:45 CEST 2003

Hello all,

Here's my query:

Running R 1.6.2 on FreeBSD 5.0, and on WinXP, and I find that the
following hangs the process:

dchisq(alpha=0.01, df=1, ncp=295)

but it does work for ncp < 294.92.

Is this general?

Best wishes to all,


Andrew Robinson			     Ph: 208 885 7115
Department of Forest Resources	     Fa: 208 885 6226
University of Idaho		     E : andrewr at uidaho.edu
PO Box 441133			     W : http://www.uidaho.edu/~andrewr
Moscow ID 83843			     Or: http://www.biometrics.uidaho.edu
No statement above necessarily represents my employer's opinion.

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