如何计算R中多边形重叠的面积? [英] How to calculate the area of polygon overlap in R?

问题描述

有人知道如何计算R中2个或更多多边形之间的公共面积吗?我希望这种计算的输出是该重叠区域的新多边形的坐标. 干杯

Does anyone know how to calculate the area in common between 2 or more polygons in R? I would like to have the output of such a calculation be the coordinates of a new polygon for that area of overlap. Cheers

推荐答案

这些天来，我将使用'raster'包中的'intersect'，'cover'，'erase'，'union'和相关函数.他们为保留顶级对象和属性付出了艰苦的努力.

these days I would use the 'intersect', 'cover', 'erase', 'union' and related functions in the 'raster' package. They do the hard work to keep the top-level object and attributes.

原点: 您可以将rgeos软件包及其gIntersection函数一起使用.线对之间的相继呼叫以及由此产生的交叉路口将带您到达那里.参见

ORIG: You could use the rgeos package with its gIntersection function. Successive calls between pairs and resulting intersections will get you there. See

library(rgeos)
?gIntersection

您将需要进入sp包中的"SpatialPolygons"结构，以获取最终坐标.参见小插图("sp").

You will need to get into the structure of "SpatialPolygons" in the sp package to get the final coordinates. See the vignette("sp").

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