Coordinate System Import/Export | R Documentation |

This function is both a getter and a setter function for coordinate information imported from a plot unknown to the current R session.

gridSVGCoords(newcoords = NULL)

`newcoords` |
A named list (names are viewport names) of coordinate information,
produced by |

In order to translate between SVG coordinates and the coordinate
system that `grid`

understands, we first need to import the
coordinate information exported from `grid.export`

. We can
then take the JSON representation of this coordinate information and
import it as a named list via `fromJSON`

. This can then
initialise a coordinate system by passing that named list into
`gridSVGCoords`

.

We can supply new definitions of a viewport's coordinate system by simply passing in an appropriate list with information for that viewport.

All viewport coordinate system information can be wiped if a single
`NA`

value is passed in.

If `newcoords`

is `NULL`

, then we get back a named list
representing coordinate system information.

If we pass the named list representing a coordinate system into the
function, we get no output. We also get no output if we pass in a
single `NA`

value.

Simon Potter

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