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POmatplotlib: figlegend legend is empty box after upgrade to matplotlib 1.1.x
 

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  1. POmatplotlib: figlegend legend is empty box after upgrade to matplotlib 1.1.x
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    <p>After upgrading our matplotlib version, we now get empty legends using <code>figlegend()</code>. It just displays an empty box like so:</p> <p><img src="https://i.stack.imgur.com/JpucY.png" alt="enter image description here"></p> <p>I have seen <a href="http://matplotlib.1069221.n5.nabble.com/Legend-and-proxy-artists-td15967.html" rel="nofollow noreferrer">this</a> and <a href="https://stackoverflow.com/questions/10557614/matplotlib-figlegend-only-printing-first-letter">this</a>, but neither has helped me so far.</p> <p>I am using the function </p> <pre><code>handles, labels = ax.get_legend_handles_labels() </code></pre> <p>and this worked fine previously. Everything else works as expected.</p> <p>I have included a very stripped down excerpt from the code which I hope illustrates how we are handling the legends.</p> <pre><code>figprops = dict(figsize=(gsp.plotSizeX, gsp.plotSizeY), dpi=gsp.plotSizeDPI, facecolor='#FFFFFF', edgecolor='#000000', linewidth=0.5, frameon=True) fig = plt.figure(**figprops) fig.autofmt_xdate(bottom = 0.2, rotation = 30, ha='right') canvas = FigureCanvas(fig) legHandles = [] legText = [] font= FontProperties(size='xx-small') hostPlots = [] pcount = len(gsp.subPlots) pn = 111 if pcount &gt; 1: for i in range(1, pcount + 1): pn = pcount * 100 + (1 * 10) + i if i &gt; 1: hostPlots.append(host_subplot(pn, axes_class = AA.Axes, sharex = hostPlots[0])) else: hostPlots.append(host_subplot(pn, axes_class = AA.Axes)) else: hostPlots.append(host_subplot(pn, axes_class = AA.Axes)) adjustprops = dict(bottom=0.10, right=0.70, wspace=0.2, hspace=0.2) # Subplot properties fig.subplots_adjust(**adjustprops) spno = 0 for sp in gsp.subPlots: series = 0 axes_offset = 0 minTicks = sp.axes[0].minTicks majTicks = sp.axes[0].majTicks for a in sp.axes: if series == 0: ax = hostPlots[sp.plotNo-1] p, = ax.plot_date(plotDate, y, 'k', linewidth = a.lineWidth, color = a.lineColor, label = a.axesLabel, linestyle = a.lineType) h, l = ax.get_legend_handles_labels() legHandles.append(h) legText.append(a.axesLegend) else: # if plotType = 'paraPlot' or plotType = 'subPlot' ax = hostPlots[sp.plotNo-1].twinx() p, = ax.plot_date(plotDate, y, 'k', linewidth = a.lineWidth, color = a.lineColor, label = a.axesLabel, linestyle = a.lineType) h, l = ax.get_legend_handles_labels() legHandles.append(h) legText.append(a.axesLegend) trans = transforms.blended_transform_factory(ax.transData, ax.transAxes) rect = patches.Rectangle((dtn, 0), width=1, height=1,transform=trans, color='yellow', alpha=0.333) ax.add_patch(rect) series += 1 spno += 1 pl = hostPlots[spno-1] box = pl.get_position() pl.set_position([box.x0, box.y0 + box.height * 0.1, box.width, box.height * 0.85]) ax = hostPlots[0] ax.set_title( gsp.plotName) #'Time series Data from CWMS Web Service') if gsp.tightLayout: plt.tight_layout(pad=0.4, w_pad=0.5, h_pad=1.0) figlegend(legHandles, (legText,), 'upper center', bbox_to_anchor=(0.40, 0.07), prop=font, ncol=2) </code></pre> <p>Has anyone else seen/fixed the same issue after upgrading using <code>get_legend_handles_labels()</code> and <code>figlegend()</code>?</p>
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    1. COalso, this is not a minimal example, I suspect 2/3 of this code is un-related to this problem
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      1. POmatplotlib: figlegend legend is empty box after upgrade to matplotlib 1.1.x
      1. UStacaswell
 

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