> From: John Hunter <jdh2...@gmail.com>
> Date: October 28, 2011 5:54:36 AM PDT
> To: Adam Mercer <ramer...@gmail.com>
> Cc: matplotlib-users@lists.sourceforge.net
> Subject: Re: [Matplotlib-users] Legend and proxy artists
>
>
> On Thu, Oct 27, 2011 at 8:12 AM, Adam Mercer <ramer...@gmail.com> wrote:
>> value_plot = []
>> for v in value:
>> value_plot.append(value_axes.plot_date(w[:,0], w[:,1], 'ro-', ms=4))
>>
>> # legend
>> date_axes.legend(([morning_plot], [evening_plot], [value_plot]),
>> ("Morning", "Evening", "Value"),
>> numpoints=1, loc=0, borderpad=1, shadow=True, fancybox=True)
>>
>> # save plot
>> fig.savefig(plot_file)
>
> Your problem is that value_plot is a list of lists, and not a list of
> lines. ax.plot_date returns a list of lines, so you need to do
>
> value_plot.extend(value_axes.plot_date(w[:,0], w[:,1], 'ro-', ms=4))
This by itself does not solve the problem. The call to legend needs a list of
handles (artists) and a list of labels. If using the line JDH suggested, try
date_axes.legend((morning_plot[0], evening_plot[0], value_plot[0]),
("Morning", "Evening", "Value"),
numpoints=1, loc=0, borderpad=1, shadow=True, fancybox=True)
With the code as it is try
date_axes.legend((morning_plot[0], evening_plot[0], value_plot[0][0]),
("Morning", "Evening", "Value"),
numpoints=1, loc=0, borderpad=1, shadow=True, fancybox=True)
If neither works, then you might need to provide more information.
-Sterling
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