Raspberry Pi Matplotlib causes system crash

[cfox]

Using Raspbian on the raspberry pi, importing the matplotlib package in python causes the system to permanently hang. No user input via ssh is accepted (including CTRL-C to exit out of Python). The system hasn't technically crashed since it will still respond to pings, but it becomes completely unable to accept any commands.

I have noticed the same error in the mathgl module (see related bug report).

How to reproduce:
0. Install python-matplotlib.
1. Run python interactively.
2. "import matplotlib"

[peter green (plugwash)]

I've just tried and failed to reproduce this. Are you still having problems with python-matplotlib on an up to date raspbian system with a recent kernel.

[qtfp (qt76fp)]

I also encountered this problem. I also import matplotlib.
My program was about real time playing of Temperature.
It crashed after the program started for quite awhile. If I shortened the renew time of the plot, it would crashed within a short time.
I also got the permanently hang.
The points I plotted were only about 1000
Here is my code

        xAchse=pylab.array([])
        yAchse=pylab.array([])
        self.fig=pylab.figure(1)
        self.fig_ax=self.fig.add_subplot(111)
        self.fig_ax.grid(True)
        self.fig_ax.set_title("Temperature-Time")
        self.fig_ax.set_xlabel("Time(minutes)")
        self.fig_ax.set_ylabel("Temperature(Celsius)")
        self.line1=self.fig_ax.plot(xAchse,yAchse,'r-')
        #self.line2=self.fig_ax.plot(xAchse,yAchse,'-')

        self.fig_ax2 = self.fig_ax.twinx()
        self.fig_ax2.set_ylabel("Wind Speed(%)",color='b')
        self.line_wind1=self.fig_ax2.plot(xAchse,yAchse,'b-')
        for tl in self.fig_ax2.get_yticklabels():
            tl.set_color('b')
                    #use FigureCanvasTkAgg to bind to tk
        self.canvas=FigureCanvasTkAgg(self.fig, master=self.myContainer_output)
        self.canvas.show()
        self.canvas.get_tk_widget().pack(side=TOP, fill=BOTH, expand=1)

      def RealtimePloter(self):
        #while True:
        # time.sleep(3)
        print "RealtimePloter is alive"
        if not self.que_to_plot.empty():
            while not self.que_to_plot.empty():
                tuple_data=self.que_to_plot.get()
            line1_X=pylab.array(tuple_data[0])
            line1_Y=pylab.array(tuple_data[1])
            line1_X_wind=pylab.array(tuple_data[2])
            line1_Y_wind=pylab.array(tuple_data[3])
            print "LX="+str(len(line1_X))+" LY="+str(len(line1_Y))+" LXW="+str(len(line1_X_wind))+" LYW="+str(len(line1_Y_wind))

            #self.line1[0].set_data(line1_X,line1_Y)
            #elf.fig_ax2.axis([(line1_X.min()-1),(line1_X.max()+1),0,100])
            #self.fig_ax.axis([(line1_X.min()-1),(line1_X.max()+1),line1_Y.min()-2,line1_Y.max()+2])
            #self.canvas.draw()
        self.root.after(self.RealtimePloter_period,self.RealtimePloter)

[Diederik (didi-debian)]

I've tried to reproduce this issue on both a wheezy (Pi 1B) and a jessie (Pi 2B) system ... and failed.
Furthermore this issue is 3+ years old without a response ...
Do you still want to keep this issue open?

@qt76fp: I failed to run your program since the source code is incomplete ...

[Launchpad Janitor (janitor)]

[Expired for Raspbian because there has been no activity for 60 days.]