[R] trouble running pixmap examples

[Andrew Schuh]

I am having trouble running the 'read.pnm' examples in this package. 
 Can anyone tell me what is wrong?

I am using the current package and running Redhat 7.2 (intel).  The 
other examples seem fine but I can't seem to pull in files.

[root at KENNY root]# R

R : Copyright 2001, The R Development Core Team
Version 1.3.0  (2001-06-22)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type `license()' or `licence()' for distribution details.

R is a collaborative project with many contributors.
Type `contributors()' for more information.

Type `demo()' for some demos, `help()' for on-line help, or
`help.start()' for a HTML browser interface to help.
Type `q()' to quit R.

[Previously saved workspace restored]

 > library(pixmap)
 > x_read.pnm(system.file("pictures/logo.ppm",package="pixmap")[1])
Error in readBin(con, "integer", n = ncells, size = 1, signed = F) :
    unused argument(s) (signed ...)
 >


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