Re: [Matplotlib-users] imshow axis directions

[John H. <jdh...@ac...>]

>>>>> "Stephen" == Stephen Walton <ste...@cs...> writes:

    Stephen> Hi, I was just comparing images displayed with imshow()
    Stephen> with what I get from IRAF's display command and ds9.  The
    Stephen> latter puts the first axis increasing horizontally and
    Stephen> the second axis increasing vertically, as if the image
    Stephen> array were addressed as img[ix,iy], where ix and iy are
    Stephen> integer x and y coordinates.  The axes imshow() produces
    Stephen> are labeled as if this is true for it as well, but in
    Stephen> fact the image is upside down with respect to what I see
    Stephen> with IRAF.  Even odder, to see the same display I see in
    Stephen> IRAF I have to do imshow(img[::-1,:]), as if I'm
    Stephen> reversing the direction of the first axis.


Does changing the rc param

  image.origin : upper             # lower | upper

to lower help?


    Stephen> I've tried to look at the source, really, but I feel like
    Stephen> I'm *years* away from being enough of a Python hacker to
    Stephen> understand matplotlib.

Hmm, the code's not that bad is it :-)

JDH