| identifyGrob {playwith} | R Documentation |
This identifies which grobs (grid objects) bounding
boxes were clicked on (or otherwise identified by pixel coordinates),
and returns their names. The names can be used by other grid
functions, like grid.edit or grid.remove.
identifyGrob(xy.pixels = grid.locator(), classes = NULL)
xy.pixels |
if given, a list with components x and y, being pixel coordinates in the current plot device. |
classes |
if given, one or more class names of grobs. This can be used to filter the results to only specified types of objects. Examples: "text", "lines", "segments", "rect". |
None yet.
a character vector of grob names, or NULL.
This will give an error if the current plot has no grobs, as returned by grid.ls.
Felix Andrews felix@nfrac.org
if (interactive()) {
xyplot(1:10 ~ 1:10)
identifyGrob()
str(grid.get(identifyGrob()[1]))
grid.remove(identifyGrob(class = "points")[1])
}