Re: [Matplotlib-users] legend marker update problem

2013-05-21 Thread Gregorio Bastardo 
Thanks, I opened an issue for it:

https://github.com/matplotlib/matplotlib/issues/2035

2013/5/17 Sterling Smith smit...@fusion.gat.com:
 Gregorio,

 I'm glad that helped.  I have not reported it on the issue tracker, but your 
 case certainly has more of a bug with it (where it works sometimes, but not 
 always), so I would recommend it.

 -Sterling

 On May 17, 2013, at 2:10AM, Gregorio Bastardo wrote:

 Hi Sterling,

 Thanks for the hint, using line._legmarker attribute solved the problem.

 I see the reason behind, however I still consider this as an incorrect
 behaviour, since marker toggling works in case the line is originally
 added to the legend without marker (so legend line and marker do not
 behave like separated). Is it worth reporting on the mpl issue tracker
 (or have you done it that time)?

 Gregorio

 2013/5/16 Sterling Smith smit...@fusion.gat.com:
 Gregorio,

 I experienced a similar issue with trying to change the marker color.

 See below the previous response from JJ for accessing the legend marker or 
 using a proxy artist.

 -Sterling



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Re: [Matplotlib-users] legend marker update problem

2013-05-17 Thread Gregorio Bastardo 
Hi Sterling,

Thanks for the hint, using line._legmarker attribute solved the problem.

I see the reason behind, however I still consider this as an incorrect
behaviour, since marker toggling works in case the line is originally
added to the legend without marker (so legend line and marker do not
behave like separated). Is it worth reporting on the mpl issue tracker
(or have you done it that time)?

Gregorio

2013/5/16 Sterling Smith smit...@fusion.gat.com:
 Gregorio,

 I experienced a similar issue with trying to change the marker color.

 See below the previous response from JJ for accessing the legend marker or 
 using a proxy artist.

 -Sterling


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Re: [Matplotlib-users] legend marker update problem

2013-05-17 Thread Sterling Smith 
Gregorio,

I'm glad that helped.  I have not reported it on the issue tracker, but your 
case certainly has more of a bug with it (where it works sometimes, but not 
always), so I would recommend it.  

-Sterling

On May 17, 2013, at 2:10AM, Gregorio Bastardo wrote:

 Hi Sterling,
 
 Thanks for the hint, using line._legmarker attribute solved the problem.
 
 I see the reason behind, however I still consider this as an incorrect
 behaviour, since marker toggling works in case the line is originally
 added to the legend without marker (so legend line and marker do not
 behave like separated). Is it worth reporting on the mpl issue tracker
 (or have you done it that time)?
 
 Gregorio
 
 2013/5/16 Sterling Smith smit...@fusion.gat.com:
 Gregorio,
 
 I experienced a similar issue with trying to change the marker color.
 
 See below the previous response from JJ for accessing the legend marker or 
 using a proxy artist.
 
 -Sterling
 


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[Matplotlib-users] legend marker update problem

2013-05-16 Thread Gregorio Bastardo 
Hi,

I've recently come accross an issue when working on an interactive
marker toggling callback. The problem is illustrated below:

import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
line, = ax.plot(range(10), range(10))
# uncomment next line to reproduce bug
# line.set_marker('d')
legend = ax.legend([line], ['foo'])
legend_line, = legend.get_lines()
fig.show()
raw_input('press enter to clear marker')
line.set_marker('')
legend_line.set_marker('')
fig.canvas.draw()
raw_input('press enter to set marker')
line.set_marker('d')
legend_line.set_marker('d')
fig.canvas.draw()
raw_input('press enter to exit')

So when I add a line object to the legend *without marker*, the update
works fine both on data and legend line, but *with marker* it does not
refresh the legend line. I consider it as a bug, please tell me if I'm
doing something wrong.

python 2.7.4 win32
matplotlib 1.2.1

Thanks,
Gregorio

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Re: [Matplotlib-users] legend marker update problem

2013-05-16 Thread Sterling Smith 
Gregorio,

I experienced a similar issue with trying to change the marker color.  

See below the previous response from JJ for accessing the legend marker or 
using a proxy artist.

-Sterling

 On Sep 4, 2012, at 5:33PM, Jae-Joon Lee wrote:
 
 On Wed, Sep 5, 2012 at 6:05 AM, Sterling Smith smit...@fusion.gat.com wrote:
 I still do not get black markers.  Furthermore, if you try to make a new 
 legend with the result of leg.get_lines(), you will get lines without 
 markers, which leads me to the conclusion I stated in my previous email 
 (which you did not copy)
 I suspect that this is because the legend marker is drawn separately from 
 the legend line to accommodate the numpoints argument of the legend 
 functions.  Then the question is how to access these markers if they are 
 separate from the line2d objects in the legend.  I didn't even see them in 
 the children of the legend [legend.get_children()].
 
 This is correct. To support legend handle like --o-- (i.e., no markers
 at the ends), lines and markers are drawn as a separate artist. You
 may use something like,
 
 line[0]._legmarker.set_markerfacecolor('black')
 line[1]._legmarker.set_markerfacecolor('black')
 
 I, personally, recommend you to use a proxy artist.
 
 http://matplotlib.sourceforge.net/users/legend_guide.html#using-proxy-artist
 
 For example,
 
 You may do something like
 
 import pylab
 pylab.plot(pylab.linspace(0,1,100),marker='o',ls='')
 pylab.plot(pylab.linspace(0,1,100),marker='o',ls='-')
 
 # creates artists for legend purpose only
 l1, = pylab.plot(pylab.linspace(0,1,100), 'ko-')
 l2, = pylab.plot(pylab.linspace(0,1,100), 'ko')
 # remove them from the axes.
 l1.remove()
 l2.remove()
 
 leg=pylab.legend([l1, l2], [Test 1, Test 2], loc='best')
 
 Regards,
 
 -JJ
On May 16, 2013, at 7:25AM, Gregorio Bastardo wrote:

 Hi,
 
 I've recently come accross an issue when working on an interactive
 marker toggling callback. The problem is illustrated below:
 
 import matplotlib.pyplot as plt
 fig = plt.figure()
 ax = fig.add_subplot(111)
 line, = ax.plot(range(10), range(10))
 # uncomment next line to reproduce bug
 # line.set_marker('d')
 legend = ax.legend([line], ['foo'])
 legend_line, = legend.get_lines()
 fig.show()
 raw_input('press enter to clear marker')
 line.set_marker('')
 legend_line.set_marker('')
 fig.canvas.draw()
 raw_input('press enter to set marker')
 line.set_marker('d')
 legend_line.set_marker('d')
 fig.canvas.draw()
 raw_input('press enter to exit')
 
 So when I add a line object to the legend *without marker*, the update
 works fine both on data and legend line, but *with marker* it does not
 refresh the legend line. I consider it as a bug, please tell me if I'm
 doing something wrong.
 
 python 2.7.4 win32
 matplotlib 1.2.1
 
 Thanks,
 Gregorio
 
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