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

[Scott Lasley]

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
>