bbx_aggregate: Functions for aggregating bbx objects These functions can...

In dmi3kno/bbx: Frame your world

Description

Functions for aggregating bbx objects These functions can perform union and intersection operations on bbx objects

Usage

bbx_aggregate(bbx, bbx2 = NULL, fx1, fy1, fx2, fy2)

bbx_union(bbx, bbx2 = NULL)

bbx_intersect(bbx, bbx2 = NULL)

Arguments

bbx	character vector of bounding boxes to perform operation on
bbx2	optional character vector of bounding boxes to element-wise aggregation with 'bbx'. If specified, needs to be length 1 or equal in length to 'bbx'.
fx1, fy1, fx2, fy2	functions to use for aggregating x1, y1, x2, y2, respectively. Defaults to 'min' for x1,y1 and 'max' for x2,y2

Value

bbx or missing value, if result is invalid bounding box

Examples

bbx_union(c("5 1 7 3", "2 4 6 8"))
bbx_union(c("5 1 7 3", "2 4 6 8"), c("1 1 1 1"))
bbx_intersect(c("5 1 7 3", "2 4 6 8")) # should return NA
bbx_intersect("5 1 7 3", "2 2 6 8")

dmi3kno/bbx documentation built on May 14, 2020, 9:08 p.m.