4
我有一个非常简单的堆放在PyQt Canvas中的matplotlib条形图。我正在尝试根据点击获得条形区域(矩形)的相应标签。但是当我尝试打印来自事件的信息时,我总是会得到_nolegend_。理想情况下,我希望看到代码中附带的条上的相应标签。如何获得matplotlib中条形图/堆积条形图上的标签?
例如,当您单击灰色栏应该打印A2
import sys
import matplotlib.pyplot as plt
from PyQt4 import QtGui
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
def on_pick(event):
print event.artist.get_label()
def main():
app = QtGui.QApplication(sys.argv)
w = QtGui.QWidget()
w.resize(640, 480)
w.setWindowTitle('Pick Test')
fig = Figure((10.0, 5.0), dpi=100)
canvas = FigureCanvas(fig)
canvas.setParent(w)
axes = fig.add_subplot(111)
# bind the pick event for canvas
fig.canvas.mpl_connect('pick_event', on_pick)
p1 = axes.bar(1,6,picker=2,label='a1')
p2 = axes.bar(1,2, bottom=6,color='gray',picker=1,label='a2')
axes.set_ylim(0,10)
axes.set_xlim(0,5)
w.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
Thanks @Suever,that worked。你是对的,与通过获取_event.artist.get_label()_值直接工作的堆积区域图相比,它非常复杂。 – narenandu