【发布时间】:2021-08-15 22:38:50
【问题描述】:
TextBox 标签的默认位置在其左侧,如图所示。我想把标签放在盒子下面。这可能吗?
示例代码和图像取自Matplotlib docs。
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.widgets import TextBox
fig, ax = plt.subplots()
fig.subplots_adjust(bottom=0.2)
t = np.arange(-2.0, 2.0, 0.001)
l, = ax.plot(t, np.zeros_like(t), lw=2)
def submit(expression):
"""
Update the plotted function to the new math *expression*.
*expression* is a string using "t" as its independent variable, e.g.
"t ** 3".
"""
ydata = eval(expression)
l.set_ydata(ydata)
ax.relim()
ax.autoscale_view()
plt.draw()
axbox = fig.add_axes([0.1, 0.05, 0.8, 0.075])
text_box = TextBox(axbox, "Evaluate")
text_box.on_submit(submit)
text_box.set_val("t ** 2") # Trigger `submit` with the initial string.
plt.show()
【问题讨论】:
标签: python matplotlib user-interface widget interactive