[R] melt on OSX ignores na.rm=T

[hadley wickham]

Hi Titus,

The latest version of reshape is 0.8.3 - perhaps upgrading will fix
your problem.

Hadley

On Sat, Feb 6, 2010 at 4:51 AM, Titus von der Malsburg
<malsburg at gmail.com> wrote:
> Hi list,
>
> I run R on Linux and OSX.  On both systems I use R version 2.9.2 (2009-08-24)
> and reshape version: 0.8.2 (2008-11-04).  When I do a melt with
> na.rm=T on a data frame I get different results on these systems:
>
> library(reshape)
>
> x <- read.table(textConnection("char trial wn
> p E10I13D0  4
> r E10I13D0  4
> a E10I13D0  4
> c E10I13D0  4
> t E10I13D0  4
> i E10I13D0  4
> c E10I13D0  4
> e E10I13D0  4
> d E10I13D0  4
> , E10I13D0 NA"), head=T)
>
> melt(x, measure.vars="char", na.rm=T)
>
> On Linux I get:
>
>  1 E10I13D0  4     char     p
>  2 E10I13D0  4     char     r
>  3 E10I13D0  4     char     a
>  4 E10I13D0  4     char     c
>  5 E10I13D0  4     char     t
>  6 E10I13D0  4     char     i
>  7 E10I13D0  4     char     c
>  8 E10I13D0  4     char     e
>  9 E10I13D0  4     char     d
>
> But on OSX I get:
>
>  1  E10I13D0  4     char     p
>  2  E10I13D0  4     char     r
>  3  E10I13D0  4     char     a
>  4  E10I13D0  4     char     c
>  5  E10I13D0  4     char     t
>  6  E10I13D0  4     char     i
>  7  E10I13D0  4     char     c
>  8  E10I13D0  4     char     e
>  9  E10I13D0  4     char     d
>  10 E10I13D0 NA     char     ,
>
>
> What's causing this glitch?  Is there a simple way to subset lines
> that do not have any NAs?  I'm looking for a line that I can use for
> all data.frames without modification.
>
> As always: thanks a lot!
>
>  Titus
>
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