[Matplotlib-users] scatter plot with data coord sized glyphs

[Heiland, Randy]

Scott, thanks for the help once again! Yes, the results are exactly what I want, and seem to be quite fast for lots of circles.

Randy

> On May 21, 2019, at 2:39 PM, Scott Lasley <selasley at icloud.com> wrote:
> 
> From the docstring in circles - "Note that `c` should not be a single numeric RGB or RGBA sequence because that is indistinguishable from an array of values to be colormapped. (If you insist, use `color` instead).   So a slight modification of your code seems to do what you want
> 
> 
> fig = plt.figure(figsize=(5,3))
> ax = fig.gca()
> ax.set_aspect("equal")
> 
> xvals = np.array([0,100])
> yvals = np.array([0,0])
> rvals = np.array([30,10])
> 
> rgb = np.array([[255, 0, 0], [0, 255, 0]])
> 
> circles(xvals, yvals, s=rvals, color=rgb / 255.)  # use color instead of c and make  0. <= rgb <= 1.
> 
> plt.xlim(-30,110)
> plt.ylim(-30,30)
> plt.show()
> 
> Scott
> 
> 
>> On May 21, 2019, at 2:08 PM, Heiland, Randy <heiland at iu.edu> wrote:
>> 
>> Thanks Scott! That certainly gets me closer. One question/problem I still have is that it doesn’t seem to like RGB as colors, in spite of the docs. I’ve attached a simple  example.
>> 
>> Randy
>> 
>> <test_circ2.py>
>> 
>>> On May 21, 2019, at 12:35 PM, Scott Lasley <selasley at icloud.com> wrote:
>>> 
>>> Syrtis Major's gist at  https://gist.github.com/syrte/592a062c562cd2a98a83  seems to do what you want.  See this stackoverflow answer for an example of the circles function in action - 
>>> https://stackoverflow.com/questions/9081553/python-scatter-plot-size-and-style-of-the-marker/24567352#24567352
>>> 
>>> hth,
>>> Scott
>>> 
>>>> On May 21, 2019, at 11:42 AM, Heiland, Randy <heiland at iu.edu> wrote:
>>>> 
>>>> Hello,
>>>> Is it possible to specify scatter plot glyph sizes - specifically, circles and, e.g., radii, in data coords, rather than “marker size” of “points**2”?
>>>> thanks, Randy
>> 
> 

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