I think this an issue about the amount of graphics memory. You are asking for an image of about 17*2*3 = 102Mb, and you need more than that.
>From the help page: Windows imposes limits on the size of bitmaps: these are not documented in the SDK and may depend on the version of Windows. It seems that 'width' and 'height' are each limited to 2^15-1 and there is a 16Mb limit on the total amount of memory in Windows 95/98/ME. so I do wonder why you are surprised. My laptop appears to be limited to about half your example with a 128Mb graphics card (and lots of other things going on). On Sun, 2 Oct 2005 [EMAIL PROTECTED] wrote: > Dear all > > I have trouble with setting the size for jpegs and pngs. I need to save > a dendrogram of 1000 words into a jpeg or png file. On one of my > computers, the following works just fine: > > bb<-agnes(aa, method="ward") > jpeg("C:/Temp/test.txt", width=17000, height=2000) > plot(bb) > dev.off() > > On my main computer, however, this doesn't work: >> jpeg("C:/Temp/test.txt", width=17000, height=2000) > Error in jpeg("C:/Temp/test.txt", width = 17000, height = 2000) : > unable to start device devWindows > In addition: Warning message: > Unable to allocate bitmap > > This is a Windows XP Pro SP2 system, which is started with this chsort >> R.version > _ > platform i386-pc-mingw32 > arch i386 > os mingw32 > system i386, mingw32 > status > major 2 > minor 1.1 > year 2005 > month 06 > day 20 > language R > > which is started with a shortcut. > "C:\rw2011\bin\Rgui.exe --max-mem-size=1500M" > > I checked the web and the R-help pages, tried out the ppsize option, and > compared the options settings with those of the machine that works > (which actually runs R 2.0.1 of 15 Nov 2004), but couldn't come up with > an explanation. Any idea what I do wrong? Did you read the help page? -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html