Re: [Matplotlib-users] Fwd: imlim in ax.imshow

[Michael A. <kmi...@gm...>]

On 2012-10-02 18:10:01 +0000, Damon McDougall said:

> Forgot to reply all. Sorry.
> 
> 
> ---------- Forwarded message ----------
> From: Damon McDougall <dam...@gm...>
> Date: Tue, Oct 2, 2012 at 7:09 PM
> Subject: Re: [Matplotlib-users] imlim in ax.imshow
> To: "K.-Michael Aye" <kmi...@gm...>
> 
> 
> On Tue, Oct 2, 2012 at 5:51 PM, K.-Michael Aye 
> <kmi...@gm...> wrote:
>> 
>> 
>> On Oct 2, 2012, at 6:33 AM, Damon McDougall 
>> <dam...@gm...> wrote:
>> 
>>> On Tue, Oct 2, 2012 at 2:19 PM, Benjamin Root 
>>> <ben...@ou...> wrote:
>>>> 
>>>> 
>>>> On Mon, Oct 1, 2012 at 7:20 PM, Michael Aye 
>>>> <kmi...@gm...> wrote:
>>>>> 
>>>>> Hi!
>>>>> 
>>>>> I see that the function ax.imshow takes the parameter 'imlim' but in
>>>>> the source (status: EPD 7.3-2) it is not being used?
>>>>> So what is it for?
>>>>> 
>>>>> Best regards,
>>>>> Michael
>>>>> 
>>>>> 
>>>> 
>>>> Confirmed.  I don't see imlim anywhere except in the imshow() signature.  I
>>>> have no recollection of this parameter, so it might be from before my time.
>>>> 
>>>> Ben Root
>>> 
>>> Is there some functionality you were looking for or were you just
>>> exploring the codebase?
>>> 
>> How nice of you to ask! ;)
>> Indeed: I had the case that image arrays inside an ImageGrid where 
>> shown with some white overhead area around, e.g. for an image of 100 
>> pixels on the x-axis, the imshow resulted in an x-axis that went from 
>> -10 to 110. I was looking for a simple way to suppress that behavior 
>> and let imshow instead use the exact image extent. I believe that the 
>> plot command has such a flag, hasn't it? (I.e. to use the exact xdata 
>> range and not try to beautify the plot?
>> 
>> Michael
>> 
>> 
>>> --
>>> Damon McDougall
>>> http://www.damon-is-a-geek.com
>>> B2.39
>>> Mathematics Institute
>>> University of Warwick
>>> Coventry
>>> West Midlands
>>> CV4 7AL
>>> United Kingdom
> 
> Is the 'extent' keyword what you're looking for?

No, because it requires input. I am looking for a boolean switch that 
says something along the lines: Respect the data, not beauty. Show 
exactly like the data is.


> 
> --
> Damon McDougall
> http://www.damon-is-a-geek.com
> B2.39
> Mathematics Institute
> University of Warwick
> Coventry
> West Midlands
> CV4 7AL
> United Kingdom