我使用QT Designer在PyQt中创建了一个小应用程序。我有一些按钮,“Plot”按钮在4个不同的Widget上创建4个图。 “清除”按钮必须清除这4个图。我尝试编写一些代码,但它没有运行。如何创建此清除按钮?谢谢。
这是我的应用程序的主要内容:
import sys
from Import_fsa import import_fsa
from PyQt4 import QtCore, QtGui
from PyQt4.QtGui import QFileDialog
from Vannucci_Gemignani import Ui_MainWindow
class GUI_fsa(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.ui=Ui_MainWindow()
self.ui.setupUi(self)
self.ui.Button_Browse.clicked.connect(self.Browse)
self.ui.Button_Plot.clicked.connect(self.Plot)
self.ui.Button_Clear.clicked.connect(self.Clear)
def Browse(self):
fname=QFileDialog.getOpenFileName()
if fname=='': #se non viene selezionato nessun file, fname è
return #nullo, generando quindi un errore nell'import fsa
self.ui.lineEdit.setText(fname)
def Plot(self):
if self.ui.lineEdit.text()=='':
QtGui.QMessageBox.information(None,'Warning','Select fsa File',QtGui.QMessageBox.Ok)
return
data_set=import_fsa(self.ui.lineEdit.text())
self.ui.widget.canvas.ax.clear()
self.ui.widget_2.canvas.ax.clear()
self.ui.widget_3.canvas.ax.clear()
self.ui.widget_4.canvas.ax.clear()
self.ui.widget.canvas.ax.plot(data_set[0])
self.ui.widget_2.canvas.ax.plot(data_set[1])
self.ui.widget_3.canvas.ax.plot(data_set[2])
self.ui.widget_4.canvas.ax.plot(data_set[3])
self.ui.widget.canvas.draw()
self.ui.widget_2.canvas.draw()
self.ui.widget_3.canvas.draw()
self.ui.widget_4.canvas.draw()
def Clear(self):
self.ui.widget.canvas.ax.clear()
self.ui.widget_2.canvas.ax.clear()
self.ui.widget_3.canvas.ax.clear()
self.ui.widget_4.canvas.ax.clear()
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
MainWindow = GUI_fsa()
MainWindow.show()
sys.exit(app.exec_())
答案 0 :(得分:3)
似乎你必须重新绘制画布以清除情节:
def Clear(self):
self.ui.widget.canvas.ax.clear()
self.ui.widget.canvas.draw()
self.ui.widget_2.canvas.ax.clear()
self.ui.widget_2.canvas.draw()
self.ui.widget_3.canvas.ax.clear()
self.ui.widget_3.canvas.draw()
self.ui.widget_4.canvas.ax.clear()
self.ui.widget_4.canvas.draw()