类似于标绘上面的世界地图，后续命令将在州渐变地图中标绘大型蓝色椭圆形，同时在图像中记录各自的像素坐标。
Similar to the plotting of the world map above, the succeeding command plots large blue ellipses on the state shaded map, while recording the respective pixel coordinates in the image.
下一项任务是用清单10中所示的命令构建标绘了城市的美国各州渐变并加了注释的地图。
The next task is to build a U.S. state shaded and annotated map with cities plotted with the commands shown in Listing 10.
第一条命令将构建色彩渐变的美国各州地图。
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.
使用这些技术、地理编码模块和地图工具，您有无数种选择可以创建按地区色彩渐变和按城市标绘的地图。
With these techniques and the geocoding modules and mapping tools, you have myriad options for creating region shaded and city-plotted maps.
使用这些像素坐标用于渐变标绘的地图中，随后图像将被加注普通框、图像和直线。
Using these pixel coordinates for the shaded plotted map, the image is then annotated with the usual boxes, images, and lines.
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.
以下代码和过程描述将展示一种相对简单的方法，用于修改地图图像和plot-latlong程序，使您可以创建有用的具有色彩渐变效果的美国地图。
The following code and process descriptions show a relatively easy way of modifying the map images and the plot-latlong program to allow you to create useful shaded U.S. maps
我们用灰色渐变来勾勒地图并从飞机俯视方向的外形显示不同子系统的布局，比如燃料，飞行控制，还有武器。
We use shades of gray to outline maps and to outline the aircraft planform shown on various subsystem formats, such as fuel, flight controls, and weapons.
地图显示2007年非洲的霍乱情况，以渐变颜色，显示每个国家呈报个案由低(黄色)至高(红色)的分布。
Map shows the distribution of reported Cholera cases by country in Africa in the year 2007, expressed in graduated colours from yellow (low) to red (high).
地图显示2007年非洲的霍乱情况，以渐变颜色，显示每个国家呈报个案由低(黄色)至高(红色)的分布。
Map shows the distribution of reported Cholera cases by country in Africa in the year 2007, expressed in graduated colours from yellow (low) to red (high).
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