[R] Problem with pixmap on R 1.7.0?

[Roger Peng]

Removing the `pixmap' package (i.e. via remove.packages() ) and
reinstalling it fixed this problem.  Thanks.

-roger
_______________________________
UCLA Department of Statistics
http://www.stat.ucla.edu/~rpeng

On Wed, 23 Apr 2003, Uwe Ligges wrote:

> Roger Peng wrote:
> > I think I've gotten this same error on a Linux (Red Hat 8.0) machine.
> > Here's the traceback:
> > 
> > 
> >>z <- read.pnm("llama.pnm")
> > 
> > Error in .class1(object) : Object "from" not found
> > 
> >>traceback()
> > 
> > 10: .class1(object)
> > 9: as(from, "pixmapChannels")
> > 8: asMethod(object, Class, value)
> > 7: "as<-"(*tmp*, Classi, value = obj)
> > 6: initialize(value, ...)
> > 5: initialize(value, ...)
> > 4: new("pixmapRGB", pixmap(data, ...))
> > 3: pixmapRGB(0, ncol = dim(res)[2], nrow = dim(res)[3], ...)
> > 2: read.pnmdata(con, pnmhead, ...)
> > 1: read.pnm("llama.pnm")
> > 
> > The image I used is at http://www.stat.ucla.edu/~rpeng/llama.pnm.  One
> > other thing -- this image used to be a JPEG file and I converted it to pnm
> > using the `convert' program from ImageMagick.  It's possible that
> > ImageMagick is screwing something up to but I'm not sure how to figure
> > that out.  
> 
> Was this installed on R-1.6.2 and not reinstalled after upgarding?
> Try to reinstall teh package.
> 
> Uwe Ligges
> 
> 
> > -roger
> > _______________________________
> > UCLA Department of Statistics
> > http://www.stat.ucla.edu/~rpeng
> > 
> > On Tue, 22 Apr 2003, Kenneth Cabrera wrote:
> > 
> > 
> >>Hi R users:
> >>I got the following message when I use the pixmap library
> >>on R 1.7.0 over w2K platform (on R 1.6.2 it runs right).
> >>
> >>pixmapGrey(matrix(c(0,1),128,128))
> >>Error in .class1(object) : Object "from" not found
> >>
> >>I download the library .zip file from:
> >>
> >>http://cran.r-project.org/bin/windows/contrib/1.7/pixmap_0.3-2.zip
> >>
> >>Other question:
> >>
> >>When I try to "Install package(s) from bioconductor" I got the
> >>following message:
> >>
> >>local({a<-CRAN.packages(CRAN=getOption("BIOC"))
> >>+ install.packages(select.list(a[,1],,TRUE), .libPaths()[1], available=a, 
> >>CRAN=getOption("BIOC"))})
> >>
> >>trying URL `http://www.bioconductor.org/bin/windows/contrib/1.7/PACKAGES'
> >>Error in download.file(url = paste(contriburl, "PACKAGES", sep = "/"),  : 
> >>cannot open: HTTP status was `404 Not Found'
> >>
> >>Are the packages in other path of www.bioconductor.org? Which one?
> >>
> >>Thank you for your help.
> >>
> >>Kenneth
> >>
> >>______________________________________________
> >>R-help at stat.math.ethz.ch mailing list
> >>https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> >>
> > 
> > 
> > ______________________________________________
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> > https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> 
>