ibra_region: Identify IBRA 7 regions or subregions
In johnbaums/things: Mostly spatial things

Description Usage Arguments Value See Also Examples

Return the names of the set of IBRA regions or subregions within which a set of points falls.

1	ibra_region(pts, tabulate = TRUE, min_n = 1, type = "subregion")

`pts`	A SpatialPolygons* object.
`tabulate`	Logical. If `TRUE`, return a named vector indicating the number of points in each occupied region.
`min_n`	The minimum number of points a region must contain in order for the region name to be returned when `tabulate` is `FALSE`.
`type`	Character. Either `'region'` or `'subregion'`. This determines how the IBRA polygons will be subset: `'region'` results in subregion polygons bing returned even if they contain no points, as long as other subregions of that region contain a total of at least `min_n` points; `subregion` returns only the subregion polygons that contain at least `min_n` points.

If tabulate is FALSE, a vector of IBRA 7 subregion (or region, see type) names corresponding to the IBRA 7 regions (or subregions) that at least min_n pts fall within. If tabulate is TRUE, a named vector showing the number of points in each occupied IBRA 7 subregions (or regions). Points that do not overlie an IBRA 7 subregion will be ignored with a warning.

adjacent_ibra

library(sp)
xy <- SpatialPoints(data.frame(x=runif(1000, 140, 145), y=runif(1000, -38, -35)))
proj4string(xy) <- '+init=epsg:4283'
reg <- ibra_region(xy, type='region')
reg
subreg <- ibra_region(xy, type='subregion')
subreg