>>>>> "GS" == Gavin Simpson <[EMAIL PROTECTED]>
>>>>> on Fri, 28 Feb 2003 13:42:21 -0000 writes:
GS> format.pval() as in:
GS> format.pval(1-pf(((RSSred-RSSful)/2)/(RSSful/(34-3)),2,34-3),digits = 5)
GS> see ?format for more information
and if you want to make sure not to suffer from unnecessary
precision cancellation,
use
pf(S, df1,df2, lower.tail = FALSE)
instead of
1 - pf(S, df1,df2, lower.tail = FALSE)
E.g.
> pf(180, 2,31, lower.tail = FALSE)
[1] 8.656982e-18
> 1 - pf(180, 2,31)
[1] 0
Martin Maechler <[EMAIL PROTECTED]> http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum LEO C16 Leonhardstr. 27
ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND
phone: x-41-1-632-3408 fax: ...-1228 <><
GS> -----Original Message-----
GS> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
GS> On Behalf Of Christoph Lehmann
GS> Sent: 28 February 2003 13:18
GS> To: [EMAIL PROTECTED]
GS> Subject: [R] show numbers not rounded
GS> how can I show an number not rounded, but in the format, eg. x.xxxx
GS> e.g.
>> signif(1-pf(((RSSred-RSSful)/2)/(RSSful/(34-3)),2,34-3),digits = 5)
GS> shows
GS> [1] 0
GS> but I need something like
GS> [1] 2.2e-16
GS> thanks
GS> christoph
GS> --
GS> Christoph Lehmann Phone: ++41 31 930 93 83
GS> Department of Psychiatric Neurophysiology Mobile: ++41 76 570 28 00
GS> University Hospital of Clinical Psychiatry Fax: ++41 31 930 99 61
GS> Waldau [EMAIL PROTECTED]
GS> CH-3000 Bern 60 http://www.puk.unibe.ch/cl/pn_ni_cv_cl.html
______________________________________________
[EMAIL PROTECTED] mailing list
http://www.stat.math.ethz.ch/mailman/listinfo/r-help
