I want to be able to select a line on a line graph. I was using plot but it
doesn't appear to work so I tried PlotCurveItem, which does work. I guess I
am missing something but I was expecting plot to work like PlotCurveItem for
the line graph. Plotting points works as expected using plot.
import pyqtgraph as pg
from PyQt4 import QtGui
import numpy as np
import sys
def main():
def clicked1(curve, points):
print(curve)
print(points)
def clicked2(points):
print(points)
app = QtGui.QApplication(sys.argv)
widg = QtGui.QWidget()
widg.move(100, 100)
pgWidg = pg.GraphicsLayoutWidget()
pgWidg.resize(750, 250)
graph = pgWidg.addPlot(row=1, col=1)
curve1 = graph.plot(y=np.sin(np.linspace(0, 20, 1000)), symbol='o',
clickable=True)
curve2 = graph.plot(y=np.sin(np.linspace(1, 21, 1000)), pen='r',
clickable=True)
curve3 = pg.PlotCurveItem(y=np.sin(np.linspace(2, 22, 1000)), pen='b',
clickable=True)
graph.addItem(curve3)
curve1.sigPointsClicked.connect(clicked1)
curve2.sigPointsClicked.connect(clicked1)
curve2.sigClicked.connect(clicked2)
curve3.sigClicked.connect(clicked2)
grid = QtGui.QGridLayout()
grid.addWidget(pgWidg, 0,0)
widg.setLayout(grid)
widg.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
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