在PySide GUI中嵌入交互式3D绘图的最佳方法是什么？我在这里看了一些关于PySide GUI中嵌入的2D图的例子：
Getting PySide to Work With Matplotlib
Matplotlib Interactive Graph Embedded In PyQt
Python/Matplotlib/Pyside Fast Timetrace Scrolling
但是，我正在寻找的功能并不完全相同。该图需要根据用户的鼠标输入进行旋转和缩放，就像在单独的窗口中绘制一样。
我试图避免必须手动进入并编写用于转换鼠标点击的功能+移动到图形旋转和画布重绘 - 即使这是唯一的方法，我甚至不确定如何做到这一点。但我认为（应该没有双关语）应该有一种方法可以重用已经存在的功能，用于在自己的窗口中创建3D绘图。
这是我的代码。它按预期工作，但情节不是交互式的。任何建议表示赞赏！
编辑：我根据tcaswell的更正修复了对FigureCanvas的使用。我还在matplotlib Event Handling and Picking文档中添加了一些内容，以表明该图似乎是在鼠标点击时获取事件。
最终编辑：以下代码现在可以根据需要生成图表。
# -*- coding: utf-8 -*-
from PySide import QtCore, QtGui
import numpy as np
import matplotlib
import sys
# specify the use of PySide
matplotlib.rcParams['backend.qt4'] = "PySide"
# import the figure canvas for interfacing with the backend
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg \
as FigureCanvas
# import 3D plotting
from mpl_toolkits.mplot3d import Axes3D # @UnusedImport
from matplotlib.figure import Figure
# Auto-generated code from QT Designer ----------------------------------------
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(750, 497)
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.horizontalLayout_2 = QtGui.QHBoxLayout(self.centralwidget)
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.frame_2 = QtGui.QFrame(self.centralwidget)
self.frame_2.setFrameShape(QtGui.QFrame.StyledPanel)
self.frame_2.setFrameShadow(QtGui.QFrame.Raised)
self.frame_2.setObjectName("frame_2")
self.verticalLayout = QtGui.QVBoxLayout(self.frame_2)
self.verticalLayout.setObjectName("verticalLayout")
self.label = QtGui.QLabel(self.frame_2)
self.label.setObjectName("label")
self.verticalLayout.addWidget(self.label)
self.label_2 = QtGui.QLabel(self.frame_2)
self.label_2.setObjectName("label_2")
self.verticalLayout.addWidget(self.label_2)
self.lineEdit = QtGui.QLineEdit(self.frame_2)
sizePolicy = QtGui.QSizePolicy(
QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(
self.lineEdit.sizePolicy().hasHeightForWidth())
self.lineEdit.setSizePolicy(sizePolicy)
self.lineEdit.setObjectName("lineEdit")
self.verticalLayout.addWidget(self.lineEdit)
spacerItem = QtGui.QSpacerItem(
20, 40, QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Expanding)
self.verticalLayout.addItem(spacerItem)
self.horizontalLayout_2.addWidget(self.frame_2)
self.frame_plot = QtGui.QFrame(self.centralwidget)
self.frame_plot.setMinimumSize(QtCore.QSize(500, 0))
self.frame_plot.setFrameShape(QtGui.QFrame.StyledPanel)
self.frame_plot.setFrameShadow(QtGui.QFrame.Raised)
self.frame_plot.setObjectName("frame_plot")
self.horizontalLayout_2.addWidget(self.frame_plot)
MainWindow.setCentralWidget(self.centralwidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(QtGui.QApplication.translate(
"MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
self.label.setText(QtGui.QApplication.translate("MainWindow",
"This is a qlabel.", None, QtGui.QApplication.UnicodeUTF8))
self.label_2.setText(QtGui.QApplication.translate("MainWindow",
"And this is another one.", None, QtGui.QApplication.UnicodeUTF8))
self.lineEdit.setText(QtGui.QApplication.translate("MainWindow",
"Text goes here.", None, QtGui.QApplication.UnicodeUTF8))
# Auto-generated code from QT Designer ----------------------------------------
class MainWindow(QtGui.QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
# intialize the window
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
# create the matplotlib widget and put it in the frame on the right
self.ui.plotWidget = Mpwidget(parent=self.ui.frame_plot)
class Mpwidget(FigureCanvas):
def __init__(self, parent=None):
self.figure = Figure(facecolor=(0, 0, 0))
super(Mpwidget, self).__init__(self.figure)
self.setParent(parent)
# plot random 3D data
self.axes = self.figure.add_subplot(111, projection='3d')
self.data = np.random.random((3, 100))
self.axes.plot(self.data[0, :], self.data[1, :], self.data[2, :])
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
mw = MainWindow()
mw.show()
# adjust the frame size so that it fits right after the window is shown
s = mw.ui.frame_plot.size()
mw.ui.plotWidget.setGeometry(1, 1, s.width() - 2, s.height() - 2)
sys.exit(app.exec_())
答案 0 :(得分：6)
您没有使用FigureCanvas权利：
class Mpwidget(FigureCanvas):
def __init__(self, parent=None):
self.figure = Figure(facecolor=(0, 0, 0))
super(Mpwidget, self).__init__(self.figure) # this object _is_ your canvas
self.setParent(parent)
# plot random 3D data
self.axes = self.figure.add_subplot(111, projection='3d')
self.data = np.random.random((3, 100))
self.axes.plot(self.data[0, :], self.data[1, :], self.data[2, :])
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
mw = MainWindow()
mw.show()
# adjust the frame size so that it fits right after the window is shown
s = mw.ui.frame_plot.size()
mw.ui.plotWidget.setGeometry(1, 1, s.width() - 2, s.height() - 2)
sys.exit(app.exec_())
每当你打电话给FigureCanvas(..)时，你都会把这个数字附加到一个新的画布上（这不是你所看到的FigureCanvas），因此回调从未开始（因为他们正在听一个你看不到的FigureCanvas。
答案 1 :(得分：1)
1）在添加轴之前创建FigureCanvas 。见https://stackoverflow.com/a/9007892/3962328
canvas = FigureCanvas(fig)
ax = figure.add_subplot(111, projection='3d')
或
class MyFigureCanvas(FigureCanvas):
def __init__(self):
self.figure = Figure()
super(FigureCanvas, self).__init__(self.figure)
self.axes = self.figure.add_subplot(111, projection='3d')
2）尝试使用ax.mouse_init（）恢复连接：
...
ax = fig.gca(projection="3d")
...
canvas = FigureCanvas(fig)
ax.mouse_init()