importnumpyasnpimportmatplotlibimportmatplotlib.pyplotaspltFORCE_RESIZE_WINDOW=FalseclassFigure:size_figure_inches=10.0#< size of full figuresize_world_half=5#< size of world (centered 0)def__init__(self,fid):self.fig=plt.figure(fid)self.canvas=self.fig.canvas#--- specify figuresfi=self.size_figure_inchesself.fig.set_size_inches(sfi,sfi)self.fig.set_dpi(100)# --- specify axisself.ax=self.fig.add_axes([0,0,1,1])# < (full image)self.cla()defcla(self):ifFORCE_RESIZE_WINDOW:sfi=self.size_figure_inchesself.fig.set_size_inches(sfi,sfi)self.fig.set_dpi(100)# --- clear axis (resets limits)plt.cla()# --- set limitsswh=self.size_world_halfself.ax.set_ylim(-swh,+swh)self.ax.set_xlim(-swh,+swh)#--- setup gridself.ax.set_xticks(range(-swh,+swh))self.ax.set_yticks(range(-swh,+swh))self.ax.grid(color='k')self.ax.grid(True)defplot2(self,P):x=P[:,0]y=P[:,1]self.ax.plot(x,y)#------------------------------------------------------------------------------------------t=np.arange(0.0,2.0,0.01)s=1+np.sin(2*np.pi*t)x=np.cos(2*np.pi*t)y=np.sin(2*np.pi*t)M_restpose=np.vstack([x,y]).transpose()print("backend: ",matplotlib.get_backend() )fig=Figure(1)offs=np.arange(-1,+1,.25)fori,offinenumerate(offs):fig.cla()fig.plot2(M_restpose)fig.fig.savefig("./test%d.png"%i)plt.pause(.1)print("Figure size for test%d "%i,fig.fig.get_size_inches())

backend:  TkAggFigure size for test0  [10.    9.66]Figure size for test1  [10.    9.32]Figure size for test2  [10.    8.98]Figure size for test3  [10.    8.64]Figure size for test4  [10.   8.3]Figure size for test5  [10.    7.96]Figure size for test6  [10.    7.62]Figure size for test7  [10.    7.28]

backend:  TkAggFigure size for test0  [10.    9.66]Figure size for test1  [10.    9.66]Figure size for test2  [10.    9.66]Figure size for test3  [10.    9.66]Figure size for test4  [10.    9.66]Figure size for test5  [10.    9.66]Figure size for test6  [10.    9.66]Figure size for test7  [10.    9.66]