Does anybody ever generate reverse cumulative distribution curves for
antibody concentration? The X axis is antibody concentration (ug/mL)
and Y axis is % of subjects, by case-control groups and different
serotypes. I use windows OS, S plus 6.1 version. Thanks.
Yuwei Zhu
-----Original Message-----
From: Spencer Graves [mailto:spencer.graves@pdf.com]
Sent: Thursday, January 29, 2004 9:51 AM
To: Molinari, Luciano
Cc: 's-news@wubios.wustl.edu'
Subject: Re: [S] bug of signif
"signif(1, dig=20)" produced 1 for me on S-Plus 6.2 under Windows
2000, though S+2000 on the same machine reproduced the bug you
mentioned.
hope this helps.
spencer graves
Molinari, Luciano wrote:
>S+2000 under Windows 2000.
>Notwithstanding past messages concerning a possible bug in signif,
>which was not, in one case, a bug, I am puzzled by the following
>behaviour:
>------------------
>S+>signif(1)
>[1] 1
>S+>signif(1,dig=12)
>[1] 0.9999999999999998
>S+>signif(1,dig=19)
>[1] 1
>S+>signif(1,dig=20)
>[1] 1e-019
>----------------------
>Using signif(1.,20) or signif(as.numeric(1),20) does not help. R, of
>course, does not have this problem. L. Molinari
>
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