这条线是由连续的标绘点组成的。

The line is made up of the succession of plotted points.

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现有的地图工具API可以让您标绘世界各地的地理点，但是您可能需要一种轻松的方法根据特定数据对州、国家或地区使用色彩渐变效果。

Existing mapping tools APIs may allow you to plot points worldwide, but you might want an easy way to shade in a state, country, or region based on certain data.

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除了简单地标绘地理点外，为美国地图中各个州显示色彩渐变效果也是一种提供信息的有效方法。

Shading in the various states on a map of the United states is an effective means of providing another channel of information beyond that available by simply plotting points.

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