Hi there, When I am using the png() function as the following to generate a png file on Mac OSX Tiger, I found that the bit depth is 32. But I want a 24 bit depth png. What should I do?
> png(filename="/Users/usg/Desktop/new.png") > plot(1:20) > dev.off() To avoid using "cairo", and R-2.7.0 does not find a Xlib on my Mac, I also tried this one: > png(filename="/Users/usg/Desktop/new.png", type ="quartz" ) > plot(1:20) > dev.off() It does not work, either. The manual says "png will use a palette if there are less than 256 colours on the page, and record a 24-bit RGB file otherwise (or a 32-bit RGBA file if type = "cairo" and non-opaque colours are used)." I don't want to set palette less than 256 colours, I just want a 24-bit png file. Could anyone help me? Thanks in advance. Long ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
