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R 语言 ggmap
2022-06-28 07:01:00 【Mrrunsen】
该ggmap软件包提供了与 google maps api 交互并获取您要绘制的地点的坐标(纬度和经度)的设施。下面的示例显示了钦奈市的卫星、道路和混合地图,包围了一些地方。我使用该geocode()函数来获取这些地方的坐标并qmap()获取地图。要获取的地图类型由您设置为maptype.
zoom您还可以通过设置参数来放大地图。默认为 10(适合大城市)。如果要缩小,请减少此数字(最多 3 个)。它可以放大到 21,适用于建筑物。
# Better install the dev versions ----------
# devtools::install_github(边栏推荐
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