pyqtgraph/examples/MouseSelection.py
Ogi Moore 4951bd743e
Replace main stanza with PyQt6 compatable variant (#1645)
* Replace main stanza with PyQt6 compatable variant

* Use fn.mkQApp instead

* remove needless comments
2021-03-22 11:17:12 -07:00

35 lines
945 B
Python

# -*- coding: utf-8 -*-
"""
Demonstrates selecting plot curves by mouse click
"""
import initExample ## Add path to library (just for examples; you do not need this)
import pyqtgraph as pg
from pyqtgraph.Qt import QtCore, QtGui
import numpy as np
win = pg.plot()
win.setWindowTitle('pyqtgraph example: Plot data selection')
curves = [
pg.PlotCurveItem(y=np.sin(np.linspace(0, 20, 1000)), pen='r', clickable=True),
pg.PlotCurveItem(y=np.sin(np.linspace(1, 21, 1000)), pen='g', clickable=True),
pg.PlotCurveItem(y=np.sin(np.linspace(2, 22, 1000)), pen='b', clickable=True),
]
def plotClicked(curve):
global curves
for i,c in enumerate(curves):
if c is curve:
c.setPen('rgb'[i], width=3)
else:
c.setPen('rgb'[i], width=1)
for c in curves:
win.addItem(c)
c.sigClicked.connect(plotClicked)
if __name__ == '__main__':
pg.mkQApp().exec_()