[Matplotlib-users] empty scatter

Vincent Douce Mathoscope mathoscope at netcourrier.com
Tue Dec 26 03:03:07 EST 2017


thank you very much Paul
it works fine
following your help and the documentation about .plot, i have found this that i will use :
'''
#full circles
lafigure.scatter([1, 2, 3], [2, 5, 0],  25, color ='black')
#empty circles
lafigure.plot([1, 2, 3], [3, 6, 1], 
        linestyle='none', marker='$\circ$', 
        markeredgecolor='k')#, 
'''

i have also, for a purpose of homogeneity in the code, tried to use $\bullet$ as a marker but it has produced an error

thanks
Vincent

> Le 25 déc. 2017 à 23:38, Paul Hobson <pmhobson at gmail.com> a écrit :
> 
> Vincent,
> 
> I think you want to use `plot` with no line, like so:
> 
> 
> from matplotlib import pyplot
> fig, ax = pyplot.subplots()
> ax.plot([1, 2, 3], [3, 6, 1], 
>         linestyle='none', marker='o', 
>         markeredgecolor='k', 
>         markerfacecoloir='none')
> 
> On Mon, Dec 25, 2017 at 12:48 PM, Vincent Douce Mathoscope <mathoscope at netcourrier.com <mailto:mathoscope at netcourrier.com>> wrote:
> hi
> i can not find on the documentation of matplotlib if a scatter can be empty
> i have made a program that calculates the position of the finger on a guitar :
> https://mathoscope.wordpress.com/2017/12/25/mathematiques-pour-la-guitare/ <https://mathoscope.wordpress.com/2017/12/25/mathematiques-pour-la-guitare/>
> you can see the source code here by clicking on "programme.txt"
> http://mathoscope.ouvaton.org/mathoscope_xyz/Informatique/distributeur.php?mot=gammes <http://mathoscope.ouvaton.org/mathoscope_xyz/Informatique/distributeur.php?mot=gammes>
> i would like the grey scaters on the left (coresponding to the chords played withou pressing them or "cordes à vide") to be black but empty like a "O"
> of course i can calculate a circle...
> do you think there is a means to have an empty scatter ?
>         ––––––––––––––––––––––––––
>                   Vincent Douce
>                :=: Mathoscope :=:
>              http://mathoscope.xyz <http://mathoscope.xyz/>
>                  06°13°11°07°26
>           Bagnères de Bigorre 65200
> 
> 
> 
> 
> 
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        ––––––––––––––––––––––––––
                  Vincent Douce
               :=: Mathoscope :=:
             http://mathoscope.xyz
                 06°13°11°07°26
          Bagnères de Bigorre 65200




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