【发布时间】：2021-08-23 13:55:52
【问题描述】：
我正在尝试使用 PyQt5 构建一个小型 GUI，并有一个显示选项卡的可视化选项卡。我做了一些研究，想展示一个简单的情节来开始，但我无法让它在 GUI 上显示。
我使用 Qt 设计器进行 GUI 布局。
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QVBoxLayout, QAction, QFileDialog,QApplication, QMainWindow
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(789, 640)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setMinimumSize(QtCore.QSize(789, 599))
self.centralwidget.setMaximumSize(QtCore.QSize(789, 599))
self.centralwidget.setObjectName("centralwidget")
self.widget = QtWidgets.QWidget(self.centralwidget)
self.widget.setGeometry(QtCore.QRect(10, 10, 761, 531))
self.widget.setObjectName("widget")
self.gridLayoutWidget = QtWidgets.QWidget(self.widget)
self.gridLayoutWidget.setGeometry(QtCore.QRect(-1, -1, 761, 531))
self.gridLayoutWidget.setObjectName("gridLayoutWidget")
self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
self.gridLayout.setSizeConstraint(QtWidgets.QLayout.SetDefaultConstraint)
self.gridLayout.setContentsMargins(0, 0, 0, 0)
self.gridLayout.setObjectName("gridLayout")
self.frame = QtWidgets.QFrame(self.gridLayoutWidget)
self.frame.setStyleSheet("background-color: rgb(255, 255, 255);")
self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
self.frame.setObjectName("frame")
self.gridLayout.addWidget(self.frame, 0, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 789, 21))
self.menubar.setObjectName("menubar")
self.menuShow_Plot = QtWidgets.QMenu(self.menubar)
self.menuShow_Plot.setObjectName("menuShow_Plot")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.actionShow_Plot = QtWidgets.QAction(MainWindow)
self.actionShow_Plot.setObjectName("actionShow_Plot")
self.menuShow_Plot.addAction(self.actionShow_Plot)
self.menubar.addAction(self.menuShow_Plot.menuAction())
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.menuShow_Plot.setTitle(_translate("MainWindow", "Menu"))
self.actionShow_Plot.setText(_translate("MainWindow", "Show Plot"))
然后添加这个以显示一个简单的情节：
class Sheet(Ui_MainWindow):
def __init__(self):
super().__init__()
def setupUi(self, MainWindow):
super().setupUi(MainWindow)
self.sc = myCanvas()
self.l=QVBoxLayout(self.frame)
self.l.addWidget(self.sc)
self.ToolBar()
def Toolbar(self):
self.actionShow_Plot.triggered.connect(self.Plot)
def Plot(self):
x=[1,2,3,4,5,6,7,8,9,10]
y=[2,4,6,8,10,12,14,16,18,20]
self.sc.plot(x,y)
class myCanvas(FigureCanvas):
def __init__(self):
self.fig = Figure()
FigureCanvas.__init__(self,self.fig)
def plot(self,x,y):
self.fig.clear()
self.ax = self.fig.add_subplot(111)
self.ax.plot(x[1:],y[1:])
self.draw
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
每当我点击菜单栏上的“显示图”时，什么都没有发生。我怎样才能让它工作？因为我认为我已经遵循了我看过的教程中的所有说明。谢谢。
【问题讨论】：
-
错字：将
self.draw更改为self.draw()
标签： python matplotlib pyqt5