我正在尝试使用matplotlib开发一个非常简单的pyside/Qt程序。我希望在按下按钮时绘制一张图表。到目前为止,我可以在构造函数中绘制一些内容,但是我无法将Pyside事件与matplotlib连接起来。有没有办法做到这一点?
import sys
import platform
import numpy as np
import PySide
from PySide.QtGui import QApplication, QMainWindow, QTextEdit,\
QPushButton, QMessageBox, QWidget, QVBoxLayout
from PySide import QtCore
__version__ = '0.0.1'
import matplotlib
matplotlib.use('Qt4Agg')
matplotlib.rcParams['backend.qt4']='PySide'
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.main_frame = QWidget()
self.figure = Figure()
self.canvas = FigureCanvas(self.figure)
self.canvas.setParent( self.main_frame )
self.axes = self.figure.add_subplot(111)
vbox = QVBoxLayout( )
vbox.addWidget( self.canvas )
self.main_frame.setLayout( vbox )
self.setCentralWidget( self.main_frame )
self.button = QPushButton('Run')
def button_pressed(self):
data1 = np.loadtxt('FStream.dat')
data2 = np.loadtxt('FShield.dat')
self.axes.plot(data1[0],data1[1],data2[0],data2[1])
print 'pressed'
self.canvas.draw()
if __name__ == '__main__':
app = QApplication(sys.argv)
frame = MainWindow()
frame.button.clicked.connect(frame.button_pressed)
frame.button.show()
frame.show()
app.exec_()
非常感谢!
编辑:将代码修改为调用draw()。
编辑2:将不同的功能分离到不同的函数中,现在看起来是这样的:
import sys
import platform
import numpy as np
import PySide
from PySide.QtGui import QApplication, QMainWindow, QTextEdit,\
QPushButton, QMessageBox, QWidget, QVBoxLayout
from PySide import QtCore
__version__ = '0.0.1'
from ui_pygradient_uni import Ui_MainWindow
import matplotlib
import widgets.matplotlibwidget
matplotlib.use('Qt4Agg')
matplotlib.rcParams['backend.qt4']='PySide'
#from matplotlib.figure import Figure
#from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.main_frame = widgets.matplotlibwidget.MatplotlibWidget()
self.button = QPushButton('Run')
vbox = QVBoxLayout( )
vbox.addWidget( self.main_frame.canvas )
self.main_frame.setLayout( vbox )
self.setCentralWidget( self.main_frame )
def button_pressed(self):
data1 = np.loadtxt('FStream.dat')
data2 = np.loadtxt('FShield.dat')
self.axes.plot(data1[0],data1[1],data2[0],data2[1])
self.canvas.draw()
print 'pressed'
if __name__ == '__main__':
app = QApplication(sys.argv)
frame = MainWindow()
frame.button.clicked.connect(frame.main_frame.Plot)
frame.button.show()
frame.show()
app.exec_()
而 matplotlibwidget 就像这样:
import matplotlib
import numpy as np
matplotlib.use('Qt4Agg')
matplotlib.rcParams['backend.qt4']='PySide'
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
class MatplotlibWidget(FigureCanvas):
def __init__(self, parent=None):
super(MatplotlibWidget, self).__init__(Figure())
self.setParent(parent)
self.figure = Figure()
self.canvas = FigureCanvas(self.figure)
self.axes = self.figure.add_subplot(111)
def Plot(self):
data1 = np.loadtxt('FStream.dat')
data2 = np.loadtxt('FShield.dat')
self.axes.plot(data1[0],data1[1],data2[0],data2[1])
self.canvas.draw()
self.canvas
与小部件连接起来了,就是你的self.main_frame
。 - Jeff