I am trying to save a series of plots as .png files by using png(file="myfile.png",bg="transparent") dev.off() for each image plot I produce. Unfortunately when I have tried this I am unable to open the files, and am told they are corrupted. I have tried to use the jpeg() function but have the same problem. The only way I have managed to export a graphic successfully is as dev.copy2eps. Aside from producing unwieldy files, this is also unhelpful as I at m hoping to create a movie of the images via ImageMagick. Any suggestions? Thanks in advance, Laura Quinn Institute of Atmospheric Science School of the Environment University of Leeds Leeds LS2 9JT tel: +44 113 343 1596 fax: +44 113 343 6716 mail: laura at env.leeds.ac.uk
Laura Quinn wrote:> I am trying to save a series of plots as .png files by using > > png(file="myfile.png",bg="transparent") > dev.off()More details please, we cannot help otherwise. At least version of R, operating system, and version of libpng, as well as the program that told you the file is corrupted ... Uwe Ligges> for each image plot I produce. Unfortunately when I have tried this I am > unable to open the files, and am told they are corrupted. > > I have tried to use the jpeg() function but have the same problem. The only way I have managed to > export a graphic successfully is as dev.copy2eps. Aside from producing > unwieldy files, this is also unhelpful as I at m hoping to create a movie of > the images via ImageMagick. > > Any suggestions? > > Thanks in advance, > > Laura Quinn > Institute of Atmospheric Science > School of the Environment > University of Leeds > Leeds > LS2 9JT > > tel: +44 113 343 1596 > fax: +44 113 343 6716 > mail: laura at env.leeds.ac.uk > > ______________________________________________ > R-help at 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
Laura Quinn wrote:> I am trying to save a series of plots as .png files by using > > png(file="myfile.png",bg="transparent") > dev.off() > > for each image plot I produce. Unfortunately when I have tried this I am > unable to open the files, and am told they are corrupted. > > I have tried to use the jpeg() function but have the same problem. The only way I have managed to > export a graphic successfully is as dev.copy2eps. Aside from producing > unwieldy files, this is also unhelpful as I at m hoping to create a movie of > the images via ImageMagick. >This sounds a bit obvious, but are you doing your plot commands _between_ the png() call and the dev.off() call? Try: png(file="foo.png") plot(1:10) dev.off() What version/platform are you using? Barry
Sorry! Tried to save the .png from both R-1.9.1 and R-1.8.0 to no avail. I am running R-1.9.1 on SusE 9.0, and R-1.8.0 on Debian. I have tried to view the images with Gimp and Kview (on both systems), to no avail. Laura Quinn Institute of Atmospheric Science School of the Environment University of Leeds Leeds LS2 9JT tel: +44 113 343 1596 fax: +44 113 343 6716 mail: laura at env.leeds.ac.uk On Mon, 6 Sep 2004, Uwe Ligges wrote:> Laura Quinn wrote: > > > I am trying to save a series of plots as .png files by using > > > > png(file="myfile.png",bg="transparent") > > dev.off() > > More details please, we cannot help otherwise. > At least version of R, operating system, and version of libpng, as well > as the program that told you the file is corrupted ... > > Uwe Ligges > > > > > for each image plot I produce. Unfortunately when I have tried this I am > > unable to open the files, and am told they are corrupted. > > > > I have tried to use the jpeg() function but have the same problem. The only way I have managed to > > export a graphic successfully is as dev.copy2eps. Aside from producing > > unwieldy files, this is also unhelpful as I at m hoping to create a movie of > > the images via ImageMagick. > > > > Any suggestions? > > > > Thanks in advance, > > > > Laura Quinn > > Institute of Atmospheric Science > > School of the Environment > > University of Leeds > > Leeds > > LS2 9JT > > > > tel: +44 113 343 1596 > > fax: +44 113 343 6716 > > mail: laura at env.leeds.ac.uk > > > > ______________________________________________ > > R-help at 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 > >
Another obvious thing to check: See what capabilities() say about png support. Andy> From: Laura Quinn > > Sorry! > > Tried to save the .png from both R-1.9.1 and R-1.8.0 to no avail. I am > running R-1.9.1 on SusE 9.0, and R-1.8.0 on Debian. > > I have tried to view the images with Gimp and Kview (on both > systems), to > no avail. > > Laura Quinn > Institute of Atmospheric Science > School of the Environment > University of Leeds > Leeds > LS2 9JT > > tel: +44 113 343 1596 > fax: +44 113 343 6716 > mail: laura at env.leeds.ac.uk > > On Mon, 6 Sep 2004, Uwe Ligges wrote: > > > Laura Quinn wrote: > > > > > I am trying to save a series of plots as .png files by using > > > > > > png(file="myfile.png",bg="transparent") > > > dev.off() > > > > More details please, we cannot help otherwise. > > At least version of R, operating system, and version of > libpng, as well > > as the program that told you the file is corrupted ... > > > > Uwe Ligges > > > > > > > > > for each image plot I produce. Unfortunately when I have > tried this I am > > > unable to open the files, and am told they are corrupted. > > > > > > I have tried to use the jpeg() function but have the same > problem. The only way I have managed to > > > export a graphic successfully is as dev.copy2eps. Aside > from producing > > > unwieldy files, this is also unhelpful as I at m hoping to > create a movie of > > > the images via ImageMagick. > > > > > > Any suggestions? > > > > > > Thanks in advance, > > > > > > Laura Quinn > > > Institute of Atmospheric Science > > > School of the Environment > > > University of Leeds > > > Leeds > > > LS2 9JT > > > > > > tel: +44 113 343 1596 > > > fax: +44 113 343 6716 > > > mail: laura at env.leeds.ac.uk > > > > > > ______________________________________________ > > > R-help at 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 > > > > > > > ______________________________________________ > R-help at 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 > >