# [Matplotlib-users] plotting positions with non-default markers

Michael Droettboom mdroettboom at continuum.io
Wed Dec 2 09:09:20 EST 2015

```Just for completeness, I should mention you can also pass any math string
as a marker as well:

plt.plot([1,2,3], marker=r'\$\bot\$')

Mike
​

On Tue, Dec 1, 2015 at 3:44 PM, Joao Fonseca <joao.q.fonseca at gmail.com>
wrote:

> This is just what I was after, thanks! And scattertext() looks pretty
> handy as well.
>
> João
>
> > On 1 Dec 2015, at 19:04, Eric Firing <efiring at hawaii.edu> wrote:
> >
> > On 2015/12/01 7:54 AM, Joao Fonseca wrote:
> >> To visualize a simulation, I would like to plot positions of two
> >> populations using the \$\top\$ and \$\bot\$ (similar to \$\perp\$ and
> >> rotated \$\perp\$) symbols as markers, but make the coordinates
> >> coincide with the line intersections in the symbols. In this way, if
> >> two points from different populations have the same coordinates they
> >> should create a cross with a long vertical line.
> >>
> >> I have tried using  plt.text and \$\perp\$, with a 90 degree rotation
> >> to get \$\bot\$:
> >>
> >> text(x,y,r’\$\bot\$',
> >> va=’top',ha='center',color='w',rotation=180,fontsize=14)
> >>
> >> but this doesn’t really work or scale, and I would rather use plot or
> >> scatter instead of text.
> >>
> >> Is there a good way to do this in pyplot? Should I use something
> >> else?
> >
> >
> > import matplotlib.pyplot as plt
> >
> > # Make your own marker by giving vertices like this:
> > mbot = ((-7, 0), (0, 0), (0, 20), (0, 0), (7, 0))
> >
> > fig, ax = plt.subplots()
> > ax.plot([1, 2, 3], marker=mbot, ms=20, mew=1,
> >        mfc='none', linestyle='none')
> > ax.margins(0.1)
> > plt.show()
> >
> >
> > Eric
> >
> >
> >
> >>
> >> Thank you
> >>
> >> João
> >> _______________________________________________
> >> Matplotlib-users mailing list
> >> Matplotlib-users at python.org
> >> https://mail.python.org/mailman/listinfo/matplotlib-users
> >>
> >
> > _______________________________________________
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> > Matplotlib-users at python.org
> > https://mail.python.org/mailman/listinfo/matplotlib-users
>
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>

--
Michael Droettboom
Continuum Analytics
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