基本矩阵样例演示了如何创建一个简单的二维矩阵查看器，它的源数据嵌在代码中。
The basic matrix example shows how to create a simple two-dimensional viewer when source data is embedded in the code.
为了演示矩阵查看器的实现，我们将修改并扩展此场景，将有更多的城市，有四个不同的矩阵以显示多个数据。
To show the implementation of the matrix viewer, we'll modify and expand the scenario to have more cities and four different matrices showing a variety of data.
在演示如何实现矩阵查看器之前，让我们先在下一节中看看数据源xml是如何生成的。
Before showing how we implemented the matrix viewer, let's explore in the next section how the data source, XML, was generated.
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