On Sep 16, 2010, at 12:06 PM, Daπid wrote:

> No, it is not. The Z channel is an aditional number per pixel that
> haves the information of the deepness. When you render an image you
> can keep this information for adding mist, without rendering again,
> for example.
> 
> I don't know if I have been able to explain myself, my mind is not
> really clear today. ;-)

Hi David,

I'm also having a difficult time understanding what you're after. Your 
description sounds to me like a normal image plot or pcolor plot; for example,

http://matplotlib.sourceforge.net/examples/pylab_examples/image_interp.html

http://matplotlib.sourceforge.net/examples/pylab_examples/pcolor_small.html

If what you're suggesting is different, then maybe you can link to a 
picture/plot of what you're after. (Or if you can't find anything, maybe you 
could draw an example of the plot).

Best,
-Tony


> 
> On Thu, Sep 16, 2010 at 5:12 PM, Benjamin Root <ben.r...@ou.edu> wrote:
>> On Thu, Sep 16, 2010 at 12:03 AM, Daπid <davidmen...@gmail.com> wrote:
>>> 
>>> Does MPL support in any way the Z channel? If not, is there any
>>> possibility to use it? For example, to create a parallel matrix of the
>>> same dimensions of the image with the values of Z in each pixel.
>>> 
>>> Thank you very much.
>>> 
>>> David.
>>> 
>> 
>> David, I am not entirely certain I understand what you mean.  Perhaps you
>> are speaking of Z-order?  Using the zorder kwarg in various plotting
>> commands, I can manually control the order in which elements are rendered.
>> When figures are saved, depending on the file format, this information can
>> get "flattened", and therefore lost, and other formats (most of the
>> vector-based formats) maintain this information, I believe.
>> 
>> Does that help?
>> Ben Root
>> 
>> 
> 
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