The simple code list of colors in Listing 1 illustrates how to extend a schema as new data choices emerge.
清单1中展示的简单的颜色代码列表演示了新数据选项出现时如何扩展一个模式。
This article presents tools and code to allow you to extract height information based on pixel colors, and apply that height information across the mapping context.
本文将提供工具和代码以允许您根据像素颜色提取高度信息，并且跨地图上下文应用高度信息。
If you'd like to change the colors, modify the code in the above listing to suit your preferences.
如果想改变颜色，请把上述清单中的代码改为适合于您的偏好的代码。
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