matplotlib-users Mailing List for matplotlib

Thank you everyone for your answers. My legend is no longer defaced since
I de-faced the call to scatter() :-)

Joe,
I think the problem is the edgecolor='face' in the scatter call for the
open circles. For me when I omit that, it all works. I'd also note
that calling legend after draw results in the legend showing the circles
correctly colored.
Regards,
Jon
On Wed, 2013年01月02日 at 16:46 -0800, Joe Louderback wrote:
> Using matplotlib.pyplot I create a scatter plot using two symbols, an
> open circle, and a filled circle. The legend for this plot shows both
> labels, but there is no symbol for the open circles (see
> missing_legend_circles.png). Switching to matplotlib.pylab yields the
> same result. However, from an "ipython --pylab" session the open
> circles are displayed in the legend. This has me more baffled than
> usual. Here's the code to reproduce the enclosed figure:
> 
> import matplotlib.pyplot as plt
> 
> 
> fig = plt.figure()
> plot = fig.add_subplot(111)
> 
> 
> plot.scatter([1, 2, 3], [4, 5, 6], c = [0.2, 0.4, 0.6], label =
> 'one', 
> cmap = 'jet', marker = 'o', edgecolor = 'face') 
> 
> 
> plot.scatter([1, 2, 3], [7, 6, 5], c = [0.2, 0.4, 0.6], label = 'two',
> cmap = 'jet', marker = 'o', edgecolor = 'face', 
> facecolor = 'none')
> plot.legend()
> plt.show()
> 
> 
> 
> 
> This is with matplotlib 1.1 and 1.2 on Windows 7 with the TkAgg, WxAgg
> and WX backends.
> 
> 
> Thank you for any help.
> 
> 
> -- Joe Louderback
-- 
______________________________________________________________
Jonathan D. Slavin Harvard-Smithsonian CfA
js...@cf... 60 Garden Street, MS 83
phone: (617) 496-7981 Cambridge, MA 02138-1516
 cell: (781) 363-0035 USA
______________________________________________________________

I doubt there is a color called 'face', according to documentation:
In [2]: setp(mat.collections.PathCollection,'edgecolor')
 edgecolor: matplotlib color arg or sequence of rgba tuples 
probably because matplotlib doesn't know how rend the color 'face'?
Chao
--
View this message in context: http://matplotlib.1069221.n5.nabble.com/open-circles-aren-t-showing-up-in-the-legend-box-tp40136p40138.html
Sent from the matplotlib - users mailing list archive at Nabble.com.

On Wed, Jan 2, 2013 at 4:46 PM, Joe Louderback <jgl...@gm...>wrote:
> import matplotlib.pyplot as plt
>
> fig = plt.figure()
> plot = fig.add_subplot(111)
>
> plot.scatter([1, 2, 3], [4, 5, 6], c = [0.2, 0.4, 0.6], label = 'one',
> cmap = 'jet', marker = 'o', edgecolor = 'face')
>
> plot.scatter([1, 2, 3], [7, 6, 5], c = [0.2, 0.4, 0.6], label = 'two',
> cmap = 'jet', marker = 'o', edgecolor = 'face',
> facecolor = 'none')
> plot.legend()
> plt.show()
>
I'm not quite sure what /should/ happen when you set the `facecolor` to
'none' and the `edgecolor` to 'face'. I'm surprised anything shows up at
the axes at all. But if you remove the `edgecolor` kwarg things look better:
import matplotlib.pyplot as plt
fig = plt.figure()
plot = fig.add_subplot(111)
plot.scatter([1, 2, 3], [4, 5, 6], c = [0.2, 0.4, 0.6], label = 'one',
 cmap = 'jet', marker = 'o', edgecolor = 'face')
plot.scatter([1, 2, 3], [7, 6, 5], c = [0.2, 0.4, 0.6], label = 'two',
 cmap = 'jet', marker = 'o', facecolor='none')
plot.legend()
plt.show()

Using matplotlib.pyplot I create a scatter plot using two symbols, an open
circle, and a filled circle. The legend for this plot shows both labels,
but there is no symbol for the open circles (see
missing_legend_circles.png). Switching to matplotlib.pylab yields the same
result. However, from an "ipython --pylab" session the open circles are
displayed in the legend. This has me more baffled than usual. Here's the
code to reproduce the enclosed figure:
import matplotlib.pyplot as plt
fig = plt.figure()
plot = fig.add_subplot(111)
plot.scatter([1, 2, 3], [4, 5, 6], c = [0.2, 0.4, 0.6], label = 'one',
 cmap = 'jet', marker = 'o', edgecolor = 'face')
plot.scatter([1, 2, 3], [7, 6, 5], c = [0.2, 0.4, 0.6], label = 'two',
 cmap = 'jet', marker = 'o', edgecolor = 'face',
 facecolor = 'none')
plot.legend()
plt.show()
This is with matplotlib 1.1 and 1.2 on Windows 7 with the TkAgg, WxAgg and
WX backends.
Thank you for any help.
-- Joe Louderback