To implement the basic matrix widget, you first need to create the structure of the grid.
要实现这个基本矩阵小部件，首先需要创建网格的结构。
2
These two Settings allowed us to start converting the first column of the grid into the vertical dimension of the matrix.
这两项设置让我们能将网格第一列转换成矩阵的竖直维度。
3
As you might have noticed in the Building a basic matrix section, we wanted to create a grid with equally serviceable horizontal and vertical headers distinguishable from the widget's body.