[R] NaN/NA and sprintf double format

[ripley@stats.ox.ac.uk]

This is now fixed in R-devel:

> sprintf("%.2f", NA)
Error in sprintf("%.2f", NA) : use format %d or %i for logical objects
> sprintf("%.2f", as.numeric(NA))
[1] "NA"
> sprintf("%.2f", NaN)
[1] "NaN"
> sprintf("%f", NaN)
[1] "NaN"
> sprintf("%f", as.numeric(NA))
[1] "NA"

Note it checks the types too.

On Tue, 14 May 2002, Dirk Eddelbuettel wrote:

>
> With a (late prerelease of) 1.5.0 on Windows, using sprintf on NaN
> yields garbage when the number of decimal is specified while it
> works fine for NA:
>
> > sprintf("%.2f", NA)
> [1] "0.00"
> > sprintf("%.2f", NaN)
> [1] "-1.#J"
>
> Not specifying the decimal precision lets both print garbage:
>
> > sprintf("%f", NaN)
> [1] "-1.#IND00"
> > sprintf("%f", NA)
> [1] "-1.#QNAN0"
>
> Is this a bug or a feature?
>
> Dirk
>
> --
> According to the latest figures, 43% of all signatures are totally worthless.
>
>
>
>
> --
> According to the latest figures, 43% of all signatures are totally worthless.
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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