On Wed, Dec 17, 2008 at 3:06 AM, Martyn Plummer <plum...@iarc.fr> wrote: > The artefacts that you see are a normal result of using bitmap graphics > devices. I have tried to explain these below:
Thanks very much for your explanations, MP; they were quite informative!! I recognize that others may feel differently, but to me, the "default" PNG being produced by my system -- e.g., http://www.piccdrop.com/images/1229495327.png -- is not ideal for presentation on the web. E.g., the image mentioned in the last sentence is blurry at 100% in every web browser and image viewer I've tried (even when I turn off aliasing in Eye of Gnome, as MP suggests). Given my feelings about the blurriness, my question is: how can I produce a non-blurry image via png()? I recognize that I can do so via png('plot.png',type='Xlib') but, I am wondering if there are solutions that don't involve Xlib. I guess my second question (if anybody has patience for it) is: what is the philosophy behind the current behavior? I was able to find some of that here: http://www.cairographics.org/FAQ/#sharp_lines ... but I am wondering if somebody could elaborate on this philosophy in relationship to R and statistical graphics, or point me to some links that do so. The link above does suggest that sharp single-pixel lines are possible via Cairo. So: are sharp single-pixel lines possible via Cairo in R, and if so how (this of course the question I've asked above)? And if not, why? (Just to be clear: I'm not saying the current implementation is necessarily "bad." At present, I'm just trying to understand more about why it is the way it is.) ______________________________________________ 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.
