Re: [Matplotlib-users] imshow axis directions

[Perry G. <pe...@st...>]

check out the .matplotlibrc image.origin configuration parameter. The 
default is to have pixel 0,0 on the upper left which is opposite of 
what us weird astronomers think is the natural locationl

Perry

On Apr 7, 2005, at 2:08 PM, Stephen Walton wrote:

> Hi,
>
> I was just comparing images displayed with imshow() with what I get 
> from IRAF's display command and ds9.  The latter puts the first axis 
> increasing horizontally and the second axis increasing vertically, as 
> if the image array were addressed as img[ix,iy], where ix and iy are 
> integer x and y coordinates.  The axes imshow() produces are labeled 
> as if this is true for it as well, but in fact the image is upside 
> down with respect to what I see with IRAF.  Even odder, to see the 
> same display I see in IRAF I have to do imshow(img[::-1,:]), as if I'm 
> reversing the direction of the first axis.
>
> I've tried to look at the source, really, but I feel like I'm *years* 
> away from being enough of a Python hacker to understand matplotlib.
>
> Steve
>
>
>
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide
> Read honest & candid reviews on hundreds of IT Products from real 
> users.
> Discover which products truly live up to the hype. Start reading now.
> http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users