[R] question on suppressing error messages with Rmath library

[James W. MacDonald]

Hi Ranjan,
Ranjan Maitra wrote:
> Dear list,
> 
> I have been using the Rmath library for quite a while: in the current
> instance, I am calling dnt (non-central t density function)
> repeatedly for several million. When the argument is small, I get the
> warning message:
> 
> full precision was not achieved in 'pnt'
> 
> which is nothing unexpected. (The density calls pnt, if you look at
> the function dnt.) However, to have this happen a huge number of
> times, when the optimizer is churning through the dataset is
> bothersome, but more importantly, a bottleneck in terms of speed. Is
> it possible to switch this off? Is there an setting somewhere that I
> am missing?

See ?options, particularly the section on 'warn'.

Best,

Jim


> 
> Many thanks and best wishes, Ranjan
> 
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-- 
James W. MacDonald, M.S.
Biostatistician
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109
734-647-5623


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