Full_Name: Joseph Scandura Version: 2.7.0 OS: Mac 10.5 Submission from: (NULL) (140.251.50.94) Since updating to 2.7.0 all plots that use image() (heatmap, etc...) now draw visible boxes around each rectangle in the plot. When there are many rectangles the surrounding color becomes dominant over the rectangle color and the overall image is borderline useless.
On Tue, May 20, 2008 at 5:05 PM, <jms2003 at med.cornell.edu> wrote:> Full_Name: Joseph Scandura > Version: 2.7.0 > OS: Mac 10.5 > Submission from: (NULL) (140.251.50.94) > > > Since updating to 2.7.0 all plots that use image() (heatmap, etc...) now draw > visible boxes around each rectangle in the plot. When there are many rectangles > the surrounding color becomes dominant over the rectangle color and the overall > image is borderline useless.<sarcasm> ...and so are bug reports without reproducible examples. </sarcasm> More seriously, for the hardworking R core people [I'm not one] spending their time going through bug reports (and people on R-devel list), please imagine yourself in their position and you realize quickly that you can help them out with by giving a reproducible example that they can cut'n'paste into their R session. Also, reporting the output of sessionInfo() is considered good etiquette. In your case you might even be able to submit "before and after" PNGs/PDFs illustrating the difference. Cheers Henrik> > ______________________________________________ > R-devel at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel >
On May 20, 2008, at 8:05 PM, jms2003 at med.cornell.edu wrote:> Full_Name: Joseph Scandura > Version: 2.7.0 > OS: Mac 10.5 > Submission from: (NULL) (140.251.50.94) > > > Since updating to 2.7.0 all plots that use image() (heatmap, etc...) > now draw > visible boxes around each rectangle in the plot. When there are many > rectangles > the surrounding color becomes dominant over the rectangle color and > the overall > image is borderline useless. >Can you, please, specify exactly which graphics device you are using and possibly a snapshot of the problem? I don't see any additional boxes being drawn on any device. The only issue I'm aware of are anti-aliasing effects around the edges of adjacent rectangles which don't fall on the pixel boundary (if anti- aliasing device is used). Depending on the subpixel location of the edge, the background color may shine through very slightly. It's not what you describe, but it's closest to what I can imagine you could mean. However, AFAICS this has not been changed recently and is a rendering artifact which is hard to get rid of in the current setup as devices are resolution-independent (the only cure I'm aware of [short of disabling anti-aliasing] is to distort the original plot such that rectangles are aligned with the pixels of the output medium). Cheers, Simon