gBoundingPoints: Select points within bounding box

In townleym/mSpatial: Some Convenience Functions building on the rGeos library

Description

Uses bracket extraction to very quickly select points within a bounding box

Usage

gBoundingPoints(allpoints, b_box)

Arguments

allpoints	A SpatialPoints or SpatialPointsDataFrame object
b_box	A set of bounding coordinates in matrix form like those returned from sp::bbox()

Details

Intersect methods (e.g. rgeos::gContains or rgeos::gIntersection) are very slow for extracting points via a bounding box. This function simply subsets a SpatialPoints or SpatialPointsDataFrame object using standard bracket extraction. As a result, it is much faster

Note: all inputs should be of class sp::SpatialPolygons|Points

Examples

gBoundingPoints(points.spdf, bbox(container_polygon))

townleym/mSpatial documentation built on May 31, 2019, 6:46 p.m.