matplotlib写一个可以用鼠标选中区域放大,右键菜单恢复原始大小的程序,并封装成类
时间: 2024-05-11 08:16:13 浏览: 227
好的,我可以为您提供一个基于matplotlib的程序,可以实现选中区域放大和还原原始大小,同时也可以封装成一个类。下面是一个简单的示例代码:
```python
import matplotlib.pyplot as plt
class InteractivePlot:
def __init__(self, data_x, data_y):
self.data_x = data_x
self.data_y = data_y
self.fig, self.ax = plt.subplots()
self.ax.plot(self.data_x, self.data_y)
self.zoomed_plot = None
self.zoomed_axes = None
self.connect()
def connect(self):
self.ax.callbacks.connect('button_press_event', self.on_press)
def on_press(self, event):
if event.button == 1: # left mouse button
self.zoomed(event)
elif event.button == 3: # right mouse button
self.restore()
def zoomed(self, event):
if event.inaxes is not None:
x_start, y_start, x_end, y_end = (
event.xdata - 1, event.ydata - 1, event.xdata + 1, event.ydata + 1)
if self.zoomed_axes:
self.restore()
self.zoomed_axes = self.fig.add_axes([0.4, 0.4, 0.5, 0.5])
self.zoomed_plot = (self.data_x[(self.data_x > x_start) & (self.data_x < x_end)],
self.data_y[(self.data_x > x_start) & (self.data_x < x_end)])
self.zoomed_axes.plot(*self.zoomed_plot)
self.zoomed_axes.set_xlim((x_start, x_end))
self.zoomed_axes.set_ylim((y_start, y_end))
self.ax.figure.canvas.draw()
def restore(self):
if self.zoomed_axes:
self.zoomed_axes.remove()
self.zoomed_axes = None
self.ax.figure.canvas.draw()
def show(self):
plt.show()
data_x = range(100)
data_y = [i ** 2 for i in data_x]
ip = InteractivePlot(data_x, data_y)
ip.show()
```
上面的代码定义了一个`InteractivePlot`类,该类初始化时传入x、y数据。它绑定到matplotlib的按压事件,检测鼠标左键按下,然后将其缩放到选定的区域。右键按下时则还原到原始大小。
您可以根据需要进行修改和优化,并将其用作您自己的项目。希望这可以回答您的第一个问题!
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