empty scatter

Community matplotlib-users
1

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/
you can see the source code here by clicking on "programme.txt"
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 ? 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
                 06?13?11?07?26
          Bagn?res de Bigorre 65200

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/matplotlib-users/attachments/20171225/6fe4c5a6/attachment.html>

2

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> 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/
you can see the source code here by clicking on "programme.txt"
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 ? 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
                 06?13?11?07?26
          Bagn?res de Bigorre 65200

_______________________________________________
Matplotlib-users mailing list
Matplotlib-users at python.org
Matplotlib-users Info Page

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/matplotlib-users/attachments/20171225/2fe172b5/attachment.html&gt;

3

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 d?c. 2017 ? 23:38, Paul Hobson <pmhobson at gmail.com> a ?crit :

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')

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/
you can see the source code here by clicking on "programme.txt"
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 ? 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 :=:
             mathoscope.xyz - This website is for sale! - mathoscope Resources and Information.;
                 06?13?11?07?26
          Bagn?res de Bigorre 65200

_______________________________________________
Matplotlib-users mailing list
Matplotlib-users at python.org <mailto:Matplotlib-users at python.org>
Matplotlib-users Info Page

        ???
                  Vincent Douce
               :=: Mathoscope :=:
             http://mathoscope.xyz
                 06?13?11?07?26
          Bagn?res de Bigorre 65200

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/matplotlib-users/attachments/20171226/b1f64450/attachment-0001.html&gt;

···

On Mon, Dec 25, 2017 at 12:48 PM, Vincent Douce Mathoscope <mathoscope at netcourrier.com <mailto:mathoscope at netcourrier.com>> wrote: