matplotlib 和 PyQt 绘制曲面
我使用 matplotlib 创建了一个 3D 绘图，如下所示：
fig = pylab.figure()
ax = Axes3D( fig )
surf = ax.plot_surface( X, Y, Z, cmap=cm.gray_r, linewidth=0, antialiased=True )
fig.canvas.set_window_title( "Distance" )
pylab.show()
太棒了：我看到灰度的表面，我可以与它交互（转动表面，移动绘图，...）
现在我需要将此绘图放入 PyQt 形式。我创建了一个继承自 QMainWindow 的类，这样做：
class ViewerForm(QMainWindow):
def __init__(self, p_parent=None, p_data=None):
QMainWindow.__init__( self, parent=p_parent )
self.main_frame = QWidget( )
self.figure = pyplot.figure()
self.axis = Axes3D( self.figure )
self.canvas = FigureCanvas( self.figure )
self.canvas.setParent( self.main_frame )
self.mpl_toolbar = NavigationToolbar( self.canvas, self.main_frame )
self.X, self.Y = np.meshgrid( p_data[ "axis_x" ], p_data[ "axis_y" ] )
self.Z = p_data[ "values_z" ]
self.surface = self.axis.plot_surface( self.X, self.Y, self.Z, cmap=cm.gray, linewidth=0, antialiased=True )
vbox = QVBoxLayout( )
vbox.addWidget( self.canvas )
vbox.addWidget( self.mpl_toolbar )
self.main_frame.setLayout( vbox )
self.setCentralWidget( self.main_frame )
当我显示此表单时，我可以看到灰度表面作为第一个图，但我无法与之交互：我无法用鼠标单击移动表面。任何人都可以告诉我我做错了什么或者我误解了什么？
I created a 3D plot using matplotlib as this:
fig = pylab.figure()
ax = Axes3D( fig )
surf = ax.plot_surface( X, Y, Z, cmap=cm.gray_r, linewidth=0, antialiased=True )
fig.canvas.set_window_title( "Distance" )
pylab.show()
It's fantastic: I see the surface in grays-cale and I can interact with it ( turn the surface, move plot, ... )
Now I need to put this plot in a PyQt form. I created a class inherit from QMainWindow doing this:
class ViewerForm(QMainWindow):
def __init__(self, p_parent=None, p_data=None):
QMainWindow.__init__( self, parent=p_parent )
self.main_frame = QWidget( )
self.figure = pyplot.figure()
self.axis = Axes3D( self.figure )
self.canvas = FigureCanvas( self.figure )
self.canvas.setParent( self.main_frame )
self.mpl_toolbar = NavigationToolbar( self.canvas, self.main_frame )
self.X, self.Y = np.meshgrid( p_data[ "axis_x" ], p_data[ "axis_y" ] )
self.Z = p_data[ "values_z" ]
self.surface = self.axis.plot_surface( self.X, self.Y, self.Z, cmap=cm.gray, linewidth=0, antialiased=True )
vbox = QVBoxLayout( )
vbox.addWidget( self.canvas )
vbox.addWidget( self.mpl_toolbar )
self.main_frame.setLayout( vbox )
self.setCentralWidget( self.main_frame )
When I show this form I can see the surface in gray-scale as the first plot but I can't interact with this: I can't move the surface clicking with mouse. Anyone can say me what I'm doing wrong or what I misunderstood?
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评论（2）
我以前也遇到过这个，这让我很困惑。关于鼠标点击，Zhenya 的说法是正确的。
默认情况下，清除/重新绘制轴时，鼠标对绘图的控制将关闭。我不太清楚为什么会这样，但您需要再次启动鼠标交互：
I had this before and it confused me a lot. Zhenya is right about the mouse clicking.
By default, control of the plot by mouse is turned off when the axis is cleared/replotted. I have no idea quite why this would be so, but you need to initiate mouse interactions again:
我认为您需要为鼠标点击注册一个回调函数，就像在这个食谱示例中一样： http:// /www.scipy.org/Cookbook/Matplotlib/Interactive_Plotting
I think you need to register a callback function for the mouse clicks, like in this cookbook example: http://www.scipy.org/Cookbook/Matplotlib/Interactive_Plotting