我们从Python开源项目中，提取了以下3个代码示例，用于说明如何使用matplotlib.pyplot.fignum_exists()。
def on_running(self, xdata, ydata): if not plt.fignum_exists(self.figure.number): self.on_launch(self.min_x, self.max_x) self.lines.set_xdata(xdata) ycummin = np.minimum.accumulate(ydata) self.lines.set_ydata(ycummin) ymin = np.amin(ycummin) ymax = np.amax(ycummin) if ymin == ymax: ymax += 1 self.ax.set_ylim(ymin - 0.1*(ymax - ymin), ymax + 0.1*(ymax - ymin)) self.pts.set_xdata(xdata) self.pts.set_ydata(ydata) self.ax.relim() self.ax.autoscale_view() self.figure.canvas.draw() self.figure.canvas.flush_events() # ============================= Helpers =============================
def display(self, image): if self.imsh is None or not plt.fignum_exists(self.imsh.figure.number): self.imsh = plt.imshow(image, interpolation='nearest') self.imsh.axes.axis('off') self.imsh.axes.set_position((0, 0, 1, 1)) self.imsh.figure.canvas.draw() else: self.imsh.set_data(image) plt.pause(1e-4)
def get_axes(self, id_axes): if self.figure is None or (not plt.fignum_exists(self.figure.number)): # create figure and axes self.figure, self.axes = plt.subplots(nrows=1, ncols=self.required_axes_total, squeeze=True, figsize=(20, 6.66)) axes_curr = [self.axes[id] for id in id_axes] for ax in axes_curr: ax.cla() return axes_curr
