[Matplotlib-users] What changes from matplotlib 1.3.1 to matplotlib 1.5.1 break the following code?

[Paul Hobson]

I'm not going to try to run that code (really a minimal example of ~10
lines should suffice to reproduce your problem).

I'm surprised this ever worked:
TheLegend = HandleAxes.legend(LineHandles, LabelHandles, 0, prop = HandleSma
llerFont, handlelength = 2.0/1.0)

Here's the new guide to legends:
http://matplotlib.org/users/legend_guide.html#plotting-guide-legend

I would definitely upgrade to the newest matplotlib as fixing the legend
should be pretty easy.

On Thu, Mar 24, 2016 at 9:52 AM, Jacob Barhak <jacob.barhak at gmail.com>
wrote:

> Sorry Paul,
>
> The 5 lines with DB in them should ignored. So please comment the 5 lines
> after the line that things broke in - it is a file that MIST uses and is
> not needed for this script. You may also make sure the is a Temp sub
> directory below the execution path since the pdf filename should be stored
> there.
>
> Yet after making those fixes, you will find out that the script works on
> matplotlib 1.3.1 and breaks on matplotlib 1.5.1. with the following error:
>
> Traceback (most recent call last):
>   File "PlotGeneration_Mod.py", line 21, in <module>
>     TheLegend = HandleAxes.legend(LineHandles, LabelHandles, 0, prop =
> HandleSma
> llerFont, handlelength = 2.0/1.0)
>   File "C:\Anaconda\lib\site-packages\matplotlib\axes\_axes.py", line 536,
> in le
> gend
>     raise TypeError('Invalid arguments to legend.')
> TypeError: Invalid arguments to legend.
>
>
> Hopefully this behavior can be explained with changes made.
>
> I am unsure I wish to upgrade the code, I am considering tow solutions 1)
> keeping the old matplotlib version, 2) making some code changes to match
> the newer version.
>
> Your explanation will help me decide on the best solution.
>
>
>                  Jacob
>
> On Thu, Mar 24, 2016 at 10:45 AM, Paul Hobson <pmhobson at gmail.com> wrote:
>
>> Can you trim this down to a reproducible example?
>>
>> It's hard to debug a "this doesn't work" question when I can't get past
>> the imports ("import DataDef as DB")
>>
>> At the very least, could you tell use where the error is occurring and
>> what the error message is?
>> -paul
>>
>> On Thu, Mar 24, 2016 at 1:02 AM, Jacob Barhak <jacob.barhak at gmail.com>
>> wrote:
>>
>>> Greetings,
>>>
>>> Are there specific new changes in matplotlib 1.5.1 that break previous
>>> code?
>>>
>>> Below is a script that works nicely with matplotlib 1.3.1 and breaks on
>>> matplotlib 1.5.1 that comes with the new anaconda on Windows.
>>>
>>> I am trying to decide if a downgrade of the matplotlib version is the
>>> best solution or is there another simple fix that will make the code work
>>> again?
>>>
>>> Note that this is code generated by the MIST system test code, so do not
>>> look for logical output - the current goal is just to pass the test by not
>>> breaking on any commands.
>>>
>>> I will appreciate your insight.
>>>
>>>               Jacob
>>>
>>>
>>> ############# Code that Breaks with 1.5.1 ##############
>>>
>>> from __future__ import division
>>> import matplotlib
>>> matplotlib.use('PDF')
>>> import matplotlib.pyplot as plt
>>> import matplotlib.font_manager
>>> import matplotlib.backends.backend_pdf
>>> import DataDef as DB
>>> Inf = DB.Inf
>>> NaN = DB.NaN
>>> inf = DB.inf
>>> nan = DB.nan
>>> HandlePDF =
>>> matplotlib.backends.backend_pdf.PdfPages('Temp\SelectedAssembledPlots.pdf')
>>> HandleFigure = plt.figure()
>>> HandleAxes = HandleFigure.add_subplot(111)
>>> DefaultLegendFontSize =
>>> matplotlib.font_manager.FontProperties(size=matplotlib.rcParams['legend.fontsize']).get_size_in_points()
>>> # New plot sequence
>>> HandleAxes.clear()
>>> HandleAxes.clear()
>>> HandleAxes.set_title('Age - Avg All')
>>> HandleAxes.set_xlabel('Time')
>>> HandleAxes.plot( [0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3]
>>> ,[None, 30.0, None, 30.0, None, 31.0, None, 31.0, 32.0, 32.0, 32.0, 32.0,
>>> 33.0, 33.0, 33.0, 33.0], 'ko-' , label = 'File 1')
>>> HandleAxes.plot( [] ,[], 'k:' , label = 'File 2')
>>> HandleSmallerFont = matplotlib.font_manager.FontProperties(size=
>>> DefaultLegendFontSize*1.0 )
>>> LineHandles, LabelHandles = HandleAxes.get_legend_handles_labels()
>>> TheLegend = HandleAxes.legend(LineHandles, LabelHandles, 0, prop =
>>> HandleSmallerFont, handlelength = 2.0/1.0)
>>> TheLegend.get_frame().set_alpha(0.5)
>>> HandlePDF.savefig(HandleFigure)
>>> HandleAxes.clear()
>>> HandleAxes.set_title("""Create Plots Warning: No parameter entry :
>>> ('Alive', 'Avg All', '')""")
>>> HandlePDF.savefig(HandleFigure)
>>> HandleAxes.clear()
>>> HandleAxes.set_title(' - Rec Count')
>>> HandleAxes.set_xlabel('Time')
>>> HandleAxes.plot( [0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3]
>>> ,[None, 900, None, 1000, None, 900, None, 900, 63, 835, 772, 835, 61, 772,
>>> 711, 772], 'ko-' , label = 'File 1')
>>> HandleAxes.plot( [] ,[], 'k:' , label = 'File 2')
>>> HandleSmallerFont = matplotlib.font_manager.FontProperties(size=
>>> DefaultLegendFontSize*1.0 )
>>> LineHandles, LabelHandles = HandleAxes.get_legend_handles_labels()
>>> TheLegend = HandleAxes.legend(LineHandles, LabelHandles, 0, prop =
>>> HandleSmallerFont, handlelength = 2.0/1.0)
>>> TheLegend.get_frame().set_alpha(0.5)
>>> HandlePDF.savefig(HandleFigure)
>>> # New plot sequence
>>> HandleAxes.clear()
>>> HandleAxes.set_title("""Create Plots Warning: No parameter entry :
>>> ('Alive', 'Avg All', '')""")
>>> HandlePDF.savefig(HandleFigure)
>>> HandleAxes.plot( [None, 30.0, None, 30.0, None, 31.0, None, 31.0, 32.0,
>>> 32.0, 32.0, 32.0, 33.0, 33.0, 33.0, 33.0] ,[None, 900, None, 1000, None,
>>> 900, None, 900, 63, 835, 772, 835, 61, 772, 711, 772], 'ko-' , label =
>>> 'File 1 - nested record count')
>>> HandleAxes.plot( [] ,[], 'k:' , label = 'File 2 - nested record count')
>>> HandleSmallerFont = matplotlib.font_manager.FontProperties(size=
>>> DefaultLegendFontSize*0.714285714286 )
>>> LineHandles, LabelHandles = HandleAxes.get_legend_handles_labels()
>>> TheLegend = HandleAxes.legend(LineHandles, LabelHandles, 0, prop =
>>> HandleSmallerFont, handlelength = 2.0/0.714285714286)
>>> TheLegend.get_frame().set_alpha(0.5)
>>> HandlePDF.savefig(HandleFigure)
>>> HandleAxes.clear()
>>> HandleAxes.set_title("""Create Plots Warning: No parameter entry :
>>> ('AnError', 'Avg All', '')""")
>>> HandlePDF.savefig(HandleFigure)
>>> HandleAxes.clear()
>>> HandleAxes.set_title("""Create Plots Warning: No parameter entry :
>>> ('Alive', 'AlsoAnError', '')""")
>>> HandlePDF.savefig(HandleFigure)
>>> HandlePDF.close()
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Matplotlib-users mailing list
>>> Matplotlib-users at python.org
>>> https://mail.python.org/mailman/listinfo/matplotlib-users
>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/matplotlib-users/attachments/20160324/3467e2da/attachment-0001.html>