Richard Brown wrote: > Hi there, > > I'm pretty new to python; I'm in the process of switching from Matlab. > I do quite a bit of image processing in my research, and while > pylab/matplotlib seems to be a great plotting library, some of the > quirks seem just a little bit frustrating - I'm hoping for some > enlightenment :) > > When I use imshow or matshow to display an array, the points with > index (m, n) are displayed with the pixels centred at (0.5 + m, 0.5 + > n). Is there a setting somewhere to make it so that the centres of the > pixels are at the index values rather than their bottom left corners? > Or must I be always adding 0.5 to things to make them appear in the > right places?
Coincidentally, a few days ago I made this change for matshow; I had made it in spy some time ago. I have so far left imshow alone; isn't its present behavior consistent with Matlab? That is not necessarily a good reason for leaving it the way it is, but it is reason for some caution. I suspect quite a few people may prefer it the way it is; let's see who responds, and what opinions are voiced. One way of maintaining compatibility (if it is indeed compatible now, and if this is judged desirable) would be to add a kwarg and/or rc option. But if there is a consensus that imshow should by default put index ticks at cell centers, then I will be happy to make that change. Eric > > Thanks, I appreciate any help > > Richard ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
