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Shift sides, contract, or expand a bounding box

Source: R/sf_bbox_shift.R
sf_bbox_shift.Rd

  • Shift, expand, or contract a bounding box (sf_bbox_shift(), sf_bbox_expand(), sf_bbox_contract())

Usage

sf_bbox_shift(
  bbox,
  nudge_x = 0,
  nudge_y = 0,
  side = c("all", "top", "bottom", "left", "right"),
  dir = NULL,
  call = caller_env()
)

sf_bbox_contract(bbox, nudge_x = 0, nudge_y = 0)

sf_bbox_expand(bbox, nudge_x = 0, nudge_y = 0)

Arguments

bbox

A bbox object.

nudge_x, nudge_y

Length 1 or 2 numeric vector; unitless. Used by or passed to sf_bbox_shift(). Required for sf_bbox_shift().

side

one or more sides to shift: "top", "bottom", "left", "right", or "all". Required for sf_bbox_shift().

dir

If "in", contract the bbox by nudge_x and nudge_y. If "out", expand the bbox by nudge_x and nudge_y. If dir is not NULL; absolute values are used for nudge_x and nudge_y. Defaults to NULL. Optional sf_bbox_shift().

call

The execution environment of a currently running function, e.g. caller_env(). The function will be mentioned in error messages as the source of the error. See the call argument of abort() for more information.