Question

如何在(df$B <- Reduce(paste, as.character(df$A), accumulate = TRUE)) # [1] "banana" "banana boats" "banana boats are" "banana boats are awesome"上将2D numpy.ndarray显示为像素值的集合？如果我没有尝试制作GUI，通常会使用QGraphicsView。

pylab.imshow()

我的尝试：

frame = array([[ 56.,  57.,  58., ...,  58.,  58.,  58.],
       [ 52.,  58.,  58., ...,  56.,  57.,  59.],
       [ 56.,  55.,  58., ...,  57.,  57.,  58.],
       ..., 
       [ 53.,  55.,  55., ...,  54.,  54.,  53.],
       [ 54.,  57.,  56., ...,  53.,  54.,  59.],
       [ 55.,  57.,  54., ...,  56.,  58.,  57.]])

scene = QGraphicsScene(self) scene.addPixmap(QPixmap.fromImage(qimage2ndarray.array2qimage(frame))) view = self.graphicsView(scene, self) # Error from this line self.graphicsView = QtGui.QGraphicsView(scene, self) view.show()。我想专门将场景添加到由QT Designer生成的名为TypeError: 'QGraphicsView' object is not callable的{{1}}。如果我用以下

替换导致错误的行

QGraphicsView

然后显示图像，但在graphicsView的左上角显示我的其他小部件。如何将展示位置限制为特定view = QtGui.QGraphicsView(scene, self)？

Answer 1

在我身边找到这个简约的解决方案：

scene = QGraphicsScene(self)            
scene.addPixmap(QPixmap.fromImage(qimage2ndarray.array2qimage(frame)))
self.graphicsView.setScene(scene)

如何在特定的QGraphicsView上显示2D numpy.ndarray作为像素值的集合？

1 个答案: