[R] Problem with pixmap on R 1.7.0?

[Uwe Ligges]

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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