[Matplotlib-users] some problems

vincent.adrien at gmail.com vincent.adrien at gmail.com
Fri Apr 6 14:07:05 EDT 2018

Hi Vincent,

I think that Jerzy got the correct answer about your issue with the 
circle patch. The docstrings reads indeed:
mpl.patches.Circle(xy, radius=5, **kwargs)
Create true circle at center *xy* = (*x*, *y*) with given *radius*.

I did not notice any disappearance when commenting the "oeil" section 
either :/.

(Attached is a script based on yours that gives the attached PNG.)

Best regards,

On 04/06/2018 01:01 AM, Jerzy Karczmarczuk wrote:
> Le 06/04/2018 à 06:29, Vincent Douce Mathoscope a écrit :
>> hi
>> i am workind on the thread "filling"
>> since a cuple of months i did not use Matplotlib
>> i have difficulties to get comfortable with simple lines of code
>> for example (end of this mail)
>> - why do the circle appear so big whereas the dimension of the picture 
>> are [0,5] for x and for y and the radius of the circle is 0.05 ?
> * The dimensions of your *figure*  are of 2.75 inches (7/2.54).
> * [0, 5] for xmin, xmax etc. are your conventional units within axes, 
> not related to figsize.
> * The radius of your Circle patch is 1 ;    (0.05,0.05) is its center.
>> - why, if i cancel the paragraph named "oeil......", do the circle 
>> disappear ?
> * I don't see any disappearance. If you "close your eye", the two plots 
> of sqrt(whatever) are eliminated,, but the patch is still there. Only 
> Matplotlib redefines the scale of the plot, the circle becomes bigger, 
> and a smaller fragment is plotted.
> Notice that you never fix the scales using axis(...).
> Bon courage.
> Jerzy Karczmarczuk
> /Caen/
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> Matplotlib-users at python.org
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