Re: [Rd] Problems with plot and Quartz device (PR#13744)

2009-06-03 Thread Simon Urbanek
Thanks, Thomas. It is indeed a very interesting phenomenon. Apparently the discrete structure in the data interacts with the way the data are plotted on a very small scale. I have committed a work-around - it forces rectangles to retain at least their original width/height when snapping t

Re: [Rd] Problems with plot and Quartz device (PR#13744)

2009-06-03 Thread Thomas Richardson
Dear Simon, Thank you very much for the very rapid response! rna is not defined in R, can you, please, supply a reproducible example? Apologies for including code that could not be run directly. (I had assumed simulating "similar" data would give the same behaviour, but having done more expe

Re: [Rd] Problems with plot and Quartz device (PR#13744)

2009-06-03 Thread Simon Urbanek
Thomas, rna is not defined in R, can you, please, supply a reproducible example? From your description I think I know roughly what's going on (Quartz attempts to snap rectangles on pixel boundaries to prevent malignant anti-aliasing effects in image plots and this may somehow interact wit