Hi Joel, On Thursday 01 February 2007 11:09:11 am Joel Hedlund wrote: > I believe I've found a bug in matplotlib which manifests after > imshow(img, aspect='auto') when only a small portion of the image is > displayed, e.g: when (xmax-xmin) << img.shape[1]. The effect of the bug > is that the transparency for the entire image seems to vary, seemingly > as a periodic funtion of (xmax-xmin). Explicitly setting the alpha > channel for each pixel has no effect. > > The attached script generates a random image of a certain size, and > plots it in four different subplots. The only thing that differs between > the subplots are slight variations in x_max. The four subplots are labeled: > > 1) The background image is visible. > 2) The background image is not visible! > 3) The background image is faded! > 4) The background image is again visible! > > which reflects the actual result on my system. As the subplots are > scaled (for example by resizing the window), the intensity then varies > in a periodic manner in each of the subplots. > > The expected result is of course that the background should be fully > visible in all subplots.
I can verify this behavior, more or less. I observe that the figure.dpi rc setting influences the results (I tried 86.23 and 200). ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
