grobCoords

0th

Percentile

Calculate Points on the Perimeter of a Grob

These functions calculate points along the perimeter (or length) of a grob.

Keywords
dplot
Usage
grobCoords(x, closed, …)
grobPoints(x, closed, …)
emptyCoords
isEmptyCoords(coords)
Arguments
x

A grob object.

closed

Whether we are asking for points along the perimeter of a closed object or points along the length of an open object. Some grobs (e.g., X-splines) can do both.

Arguments to be used by methods.

coords

A set of grob coordinates (as generated by grobCoords).

Details

Custom grobs can write their own methods for grobPoints.

The emptyCoords object can be used to return a "null" result (e.g., when asking for closed coordinates on an open line) and the isEmptyCoords function can be used to check for "null" results.

Value

A list of lists with components x and y. All locations are in inches relative to the current grid viewport.

Aliases
  • grobCoords
  • grobPoints
  • emptyCoords
  • isEmptyCoords
Documentation reproduced from package grid, version 3.6.1, License: Part of R 3.6.1

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