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POPython Interactive Console Hangs during matplotlib?
 

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  1. POPython Interactive Console Hangs during matplotlib?
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    <p>When I run the following drawing, the console always just hangs there and the drawing is never finished. The computation is not heavy, but I am not sure where is inappropriate.</p> <pre><code>import matplotlib.pyplot as plt def showTrajectories(datafilename): with open(datafilename) as f1: content1 = f1.readlines() content1 = [line.strip() for line in content1] # remove newline character for i in range(int(content1[1])): traj = [float(x) for x in content1[i+2].split()] x = traj[2:][::2] y = traj[2:][1::2] plt.plot(x, y, color = '#99ffff') plt.title(datafilename) plt.xlabel('x (m)', fontsize=16) plt.ylabel('y (m)', fontsize=16) plt.show() def showRepresentatives(resultfilename): with open(resultfilename) as f2: content2 = f2.readlines() content2 = [line.strip() for line in content2] # remove newline character for i in range(int(content2[0])): traj = [float(x) for x in content2[i+1].split()] x = traj[2:][::2] y = traj[2:][1::2] plt.plot(x, y, linewidth=3, color='#006633') plt.title(datafilename) plt.xlabel('x (m)', fontsize=16) plt.ylabel('y (m)', fontsize=16) plt.show() </code></pre> <p>I am using <a href="http://pytools.codeplex.com/" rel="nofollow">Python Tools for Visual Studio</a> and Python 2.7, if these matter.</p> <hr> <p>The <code>showTrajectories(datafilename)</code> can be plotted correctly. It hangs when it comes to <code>showRepresentatives(resultfilename)</code>. So I will just post the <code>resultfilename</code> data here as follows:</p> <pre><code>10 0 4 -23.6 -2.7 -35.6 -2.1 -47.3 -1.2 -58.0 -1.0 1 6 -56.6 4.5 -58.0 16.7 -59.2 27.4 -60.4 38.8 -61.5 49.5 -62.5 60.1 2 7 -0.6 10.7 -1.5 21.9 -2.6 32.7 -3.6 43.4 -4.7 54.5 -5.6 65.1 -5.8 75.7 3 10 -26.9 73.9 -11.1 75.4 -0.4 75.9 11.9 76.0 22.6 76.0 33.5 76.5 44.2 76.3 55.5 76.2 66.8 77.0 79.3 77.8 4 10 9.2 -8.5 19.1 -14.1 29.6 -16.0 41.4 -16.5 52.2 -16.6 63.0 -16.7 74.1 -15.3 85.8 -12.9 96.5 -13.8 107.0 -15.4 5 8 71.0 -21.0 72.1 -10.4 72.4 0.6 72.2 11.4 72.2 22.7 71.0 33.3 70.0 45.6 70.7 56.5 6 2 72.2 -18.8 79.9 -26.3 7 3 72.6 28.8 86.5 29.4 98.1 30.6 8 5 -60.4 61.2 -71.0 54.2 -81.2 47.0 -90.0 40.9 -99.1 33.3 9 3 73.2 56.2 86.4 58.0 97.7 59.1 </code></pre>
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    1. COThe code looks good... Does it hang during the showTrajectories or the showRepresentatives function? Perhaps you can try to generate some fake data and post that here so that we can play with a complete working example. One thought: plt.show() generally blocks all other commands until you close the plot window, so that might be the problem if you are trying to call both functions one after the other. Only call plt.show() at the very end.
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      1. POPython Interactive Console Hangs during matplotlib?
      1. USDanHickstein
    2. CO@DanHickstein Awesome! You are correct! It works when I move show() to the end. But I copy and past it into Spyder it works. But fails in VS. Strange. Would you mind posting it as an answer?
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      1. USSibbs Gambling
 

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