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[英]python 2.7 matplotlib pylab : My plot is empty. How can I make the data points show up in the plot?
[英]Python 2.7: How to make data points appear on an empty canvas plot window
我想在画布上绘制xcoord与ycoord。 我现在得到的只是一个空的绘图窗口(1高x 1宽)。 如何使数据点出现在绘图窗口中? 我已经检查了xcoord和ycoord数组。 它们存在并且正确。
class SurveyRoute(SurveyPlotWidget):
"""docstring for SurveyRoute"""
def __init__(self, survey_name, parent=None, model=None):
self.survey_name = survey_name
SurveyPlotWidget.__init__(self, parent, model)
def read_coordinate_file(self, survey_name):
self.coords = station_coordinates.get_coordinates_all(survey_name)
df = pd.DataFrame(self.coords,index=['UTM X','UTM Y','depth'])
df = DataFrame.transpose(df)
self.xcoord = df['UTM X'].values.tolist()
self.ycoord = df['UTM Y'].values.tolist()
print self.xcoord
def on_hover(self, event):
self.fig_text.set_text('')
contains, attrd = self.points.contains(event)
if contains == True:
ind = attrd['ind'][0]
self.fig_text.set_text('bm {}'.format(self.model.benchmarks[ind]))
self.canvas.draw()
def plot_coords(self):
fig = plt.figure()
plt.plot(self.xcoord, self.ycoord, marker='o', ms=10, linestyle='', alpha=1.0, color='r', picker = True)[0]
plt.xlabel('UTM x-coordinate')
plt.ylabel('UTM y-coordinate')
fig.canvas.mpl_connect('pick_event', self.on_hover)
fig.canvas.draw()
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
obj = SurveyRoute('mikkel')
obj.read_coordinate_file('mikkel')
obj.plot_coords()
obj.show()
app.exec_()
fig = plt.figure()
应该删除并
fig.canvas.mpl_connect('pick_event', self.on_hover)
fig.canvas.draw()
应该由
self.canvas.mpl_connect('pick_event', self.on_hover)
self.canvas.draw()
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