Well I guess there's no point in starting a discussion here. I can also do all
calculations, gather the plots in a list before starting the pdf device and
plot them later. But just to prove my point: the attached pdfs (generated in a
clean session, on the system used to generate the bug report) are not
identical. They might display fine with some pdf viewers, but at least Adobe
Reader 9.3.0 on OS X refuses to display test4.pdf.
Regards,
Manuel
On 15.01.2010, at 18:48, Simon Urbanek wrote:
> How is this a bug in R? First, multicore is not R. Second, you're running
> multicore with GUI code loaded which it explicitly tells you that it won't
> work. Third, the code you provided does produce correct PDFs (tested on the
> same platform you provided) in a clean session (unsurprisingly).
>
> Cheers,
> Simon
>
>
> On Jan 15, 2010, at 9:15 , kolle...@stat.math.ethz.ch wrote:
>
>> The attached code produces corrupted pdfs (test2.pdf, test4.pdf and
>> test5.pdf). The resulting pdf depends on how many cores are available on
>> the machine.
>>
>> I don't see why there should be any difference between the pdfs (exept for
>> the timestamp). Doing many operations involving mclapply can increase the
>> size of the resulting pdf by ten times!
>>
>> Thank you for checking this.
>>
>> require(multicore)
>>
>> pdf('test.pdf')
>> y <- unlist(lapply(1:50, identity))
>> plot(y)
>> print(y)
>> dev.off()
>>
>> options(cores = 3)
>>
>> pdf('test2.pdf')
>> y <- unlist(mclapply(1:50, identity))
>> plot(y)
>> print(y)
>> dev.off()
>>
>> pdf('test3.pdf')
>> y <- unlist(lapply(1:50, identity))
>> plot(y)
>> print(y)
>> dev.off()
>>
>> options(cores = 2)
>>
>> pdf('test4.pdf')
>> y <- unlist(mclapply(1:50, identity))
>> plot(y)
>> print(y)
>> dev.off()
>>
>> options(cores = 8)
>>
>> pdf('test5.pdf')
>> y <- unlist(mclapply(1:50, identity))
>> plot(y)
>> print(y)
>> dev.off()
>>
>>
>> --please do not edit the information below--
>>
>> Version:
>> platform = x86_64-unknown-linux-gnu
>> arch = x86_64
>> os = linux-gnu
>> system = x86_64, linux-gnu
>> status =
>> major = 2
>> minor = 10.1
>> year = 2009
>> month = 12
>> day = 14
>> svn rev = 50720
>> language = R
>> version.string = R version 2.10.1 (2009-12-14)
>>
>> Locale:
>> LC_CTYPE=de_CH.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=de_CH.UTF-8;LC_MONETARY=C;LC_MESSAGES=de_CH.UTF-8;LC_PAPER=de_CH.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=de_CH.UTF-8;LC_IDENTIFICATION=C
>>
>> Search Path:
>> .GlobalEnv, package:skewt, package:rgl, package:ggplot2, package:reshape,
>> package:plyr, package:proto, package:VGAM, package:stats4, package:splines,
>> package:latticeExtra, package:RColorBrewer, package:doMC, package:multicore,
>> package:foreach, package:codetools, package:iterators, package:abind,
>> package:seqinr, package:mvbutils, mvb.session.info, package:tools,
>> package:robust, package:rrcov, package:pcaPP, package:mvtnorm,
>> package:robustbase, package:MASS, package:glmmML, package:playwith,
>> package:grid, package:gWidgetsRGtk2, package:cairoDevice, package:lattice,
>> package:gWidgets, package:graphics, package:grDevices, package:datasets,
>> package:fortunes, package:sfsmisc, package:stats, package:utils,
>> package:methods, Autoloads, package:base
>>
>> ______________________________________________
>> R-devel@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>>
>
>
> !DSPAM:4b50aa7856519769714416!
>
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