Matplotlib 获取文本的边界框并更新画布
与此问题类似,我想以不同的样式书写两个标签(粗体和普通,例如“boldnormal”),就像它们是相同的标签而不使用乳胶一样 这里是它正在发挥作用的地方:Matplotlib 获取文本的边界框并更新画布,matplotlib,Matplotlib,与此问题类似,我想以不同的样式书写两个标签(粗体和普通,例如“boldnormal”),就像它们是相同的标签而不使用乳胶一样 这里是它正在发挥作用的地方: from matplotlib import pyplot as plt fig, ax = plt.subplots() def print_label(fig): l = fig.text(0.5, 0.5, "bold", fontweight='bold') def on_draw(event):
from matplotlib import pyplot as plt
fig, ax = plt.subplots()
def print_label(fig):
l = fig.text(0.5, 0.5, "bold", fontweight='bold')
def on_draw(event):
xmax = l.get_window_extent().inverse_transformed(fig.transFigure).max[0]
print xmax
fig.text(xmax, 0.5, "Normal")
return False
fig.canvas.mpl_connect('draw_event', on_draw)
print_label(fig)
fig.canvas.draw()
plt.show()
但是我不高兴,因为print\u label
的使用是不透明的:用户必须调用fig.canvas.draw()
。所以我试了一下:
from matplotlib import pyplot as plt
fig, ax = plt.subplots()
def print_label(fig):
l = fig.text(0.5, 0.5, "bold", fontweight='bold')
def on_draw(event):
xmax = l.get_window_extent().inverse_transformed(fig.transFigure).max[0]
print xmax
fig.text(xmax, 0.5, "Normal")
fig.canvas.mpl_disconnect(event)
fig.canvas.draw()
return False
fig.canvas.mpl_connect('draw_event', on_draw)
print_label(fig)
plt.show()
问题是我无法断开事件的连接,我得到:
RuntimeError: maximum recursion depth exceeded while calling a Python object
我遵循了第一节:
运行时错误:如果有人在尝试调用l.get\u window\u extent().inverse\u transformed(图transFigure)
时遇到此错误,则无法获取不带渲染器的窗口范围。先调用plt.gcf().canvas.draw()
,然后再进行求解。
from matplotlib import pyplot as plt
fig, ax = plt.subplots()
def print_label(fig):
l = fig.text(0.5, 0.5, "bold", fontweight='bold')
def on_draw(event):
xmax = l.get_window_extent().inverse_transformed(fig.transFigure).max[0]
print xmax
fig.text(xmax, 0.5, "Normal")
fig.canvas.mpl_disconnect(cid)
return False
cid = fig.canvas.mpl_connect('draw_event', on_draw)
fig.canvas.draw()
print_label(fig)
plt.show()