Thanks for feedback Thomas and Sterling. Here is the ugly solution I
ended up with:
# plot a marker with a blank label
map.plot(x, y, 'o', markersize=markersize, markerfacecolor=color, label="")
# specify a coordinate outside the map region (Africa)
x,y = map(-60, -60)
# use a fixed markersize for coordinates outside the map region and
use a non-blank label
map.plot(x, y, 'o', markersize=10, markerfacecolor=color, label=label)
I should have used proxy artists as suggested by Sterling. Here is an example:
http://matplotlib.org/users/legend_guide.html#proxy-legend-handles
import matplotlib.patches as mpatches
import matplotlib.pyplot as plt
red_patch = mpatches.Patch(color='red', label='The red data')
plt.legend(handles=[red_patch])
plt.show()
On Fri, Oct 24, 2014 at 7:36 PM, Sterling Smith <smit...@fusion.gat.com> wrote:
> Your solution is about as good as "proxy artists" in legends, which would be
> the official method. (Google "proxy artist matplotlib".)
>
> It may be relevant that you can access the marker of the legend entries with
> the _marker attribute of the handles. Search the mailing list archives for
> this one.
>
> -Sterling
>
> On Oct 23, 2014, at 8:05PM, Tommy Carstensen wrote:
>
>> Is there a way to have all markers in the legend box have the same size?
>> www.tommycarstensen.com/python3_matplotlib_basemap_merc_bluemarbleTrue_scaledTrue_1000GTrue_hresolution.jpg
>>
>> I came up with a solution by plotting a marker outside the latitude
>> and longitude range, but that's not a very good solution.
>>
>> Thanks for your time.
>>
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