Full_Name: Alex Deckmyn
Version: 1.5.1
OS: Linux Mandrake 7.0
Submission from: (NULL) (193.190.63.62)
A short function in a library contains the complex number -2i :
phihat <- function(x)
{
x+ (-2i)
}
If i read the source file with source("phihat") this works fine. If I
include it
as
a function in a library and read it with library(test), the function is still
read corectly, but when I print it out it shows as
> phihat
function (x)
{
x + (-0+2i)
}
Internally R still uses (-2i) though:> phihat(0)
[1] 0-2i
The problem only seems to occur when the function is part of a library.
When I read the same function via source:
> source("~/software/R-libs/test/R/test")
> phihat
function(x)
{
x+ (-2i)
}
Usually I work in emacs using ESS. When I edit the function phihat (Ctrl-C
Ctrl-d)
I get the bad representation and after reloading the function (ctrl-c ctrl-l)
the function has changed. quite a dangerous bug, I think, though I admit my
Linux
version is quite old.
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This looks like bug PR#1697 in the deparser. I've written a patch that fixes that case; I'll check out this one. On Wed, 3 Jul 2002 14:25:59 +0200 (MET DST), you wrote in message <200207031225.OAA08552@pubhealth.ku.dk>:>Full_Name: Alex Deckmyn >Version: 1.5.1 >OS: Linux Mandrake 7.0 >Submission from: (NULL) (193.190.63.62) > > >A short function in a library contains the complex number -2i : > >phihat <- function(x) > { >x+ (-2i) > } > > >If i read the source file with source("phihat") this works fine. If I include it >as > a function in a library and read it with library(test), the function is still >read corectly, but when I print it out it shows as > >> phihat >function (x) >{ > x + (-0+2i) >}The difference is that in the first case R keeps the source of the function (in attr(phihat,'source')). In the second case it deparses the internal representation. Duncan Murdoch -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._