View source: R/clip_shapefile.R
clip_shapefile | R Documentation |
Clips an area from a larger shape file (SpatialPolygons).
clip_shapefile(
x,
limits = NULL,
proj4.limits = "+proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0",
simplify = FALSE,
tol = 60,
return.boundary = FALSE
)
x |
Original shape file to be clipped. Required. Must contain |
limits |
The constraining area used to clip |
proj4.limits |
The |
simplify |
Should the |
tol |
Numerical tolerance value to be used for simplification. See |
return.boundary |
logical. If |
The function uses the gIntersection
function to clip smaller SpatialPolygons from larger ones. The clip area is constrained by either a numeric vector or SpatialPolygons object in the limits
argument. One of these arguments must be given. Defining limits
by a SpatialPolygons object gives greater freedom for the clip area as the area does not have to be rectangular.
Mikko Vihtakari with a solution from Simon O'Hanlon, Roger Bivand/SO community
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