Problems with png()

On Mon, 6 Sep 2004, Barry Rowlingson 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()

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?

Yes, I have been using the above call to no avail. I'd be suprised if my
libpng wasn't up-to-date on SuSe 9.0, but I'm not sure how to check which
version I have?

Laura

Barry