On Sat, May 16, 2009 at 6:58 PM, <jorgesmbox...@yahoo.es> wrote: > > Hi, > I want to read images and do some processing with them. While learning how to > do this, i.e. opening images, displaying them, transforming them tu numpy > arrays, etc., I came across a strange behaviour. If I open an image and use > imshow() to display it, it comes upside down. See this thread in the numpy > mailing list for more details: > http://thread.gmane.org/gmane.comp.python.numeric.general/30148 . Someone on > that list suggested to check here if this behavior was correct. Is it normal > that the image appears upside down? If yes, can someone explain what's going > on?
Note that the image may be upside down for you but may be correct for others. The array itself does not know about the orientation of the image and you have to explicitly specify this. For imshow (and other similar commands), use the origin keyword. e.g., >>> imshow(a, origin="lower") http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.imshow -JJ > > jorge > > > > > > ------------------------------------------------------------------------------ > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables > unlimited royalty-free distribution of the report engine > for externally facing server and web deployment. > http://p.sf.net/sfu/businessobjects > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
