geo_bb: Flexible function to generate bounding boxes

In stplanr: Sustainable Transport Planning

Flexible function to generate bounding boxes

Description

Takes a geographic object or bounding box as an input and outputs a bounding box, represented as a bounding box, corner points or rectangular polygon.

Usage

geo_bb(
  shp,
  scale_factor = 1,
  distance = 0,
  output = c("polygon", "points", "bb")
)

Arguments

shp	Spatial object
scale_factor	Numeric vector determining how much the bounding box will grow or shrink. Two numbers refer to extending the bounding box in x and y dimensions, respectively. If the value is 1, the output size will be the same as the input.
distance	Distance in metres to extend the bounding box by
output	Type of object returned (polygon by default)

See Also

bb_scale

Other geo: bbox_scale(), bind_sf(), geo_bb_matrix(), geo_buffer(), geo_length(), geo_projected(), geo_select_aeq(), quadrant()

Examples

shp <- routes_fast_sf
shp_bb <- geo_bb(shp, distance = 100)
plot(shp_bb, col = "red", reset = FALSE)
plot(geo_bb(routes_fast_sf, scale_factor = 0.8), col = "green", add = TRUE)
plot(routes_fast_sf$geometry, add = TRUE)
geo_bb(shp, output = "point")

stplanr documentation built on Sept. 15, 2023, 9:07 a.m.