Create and optionally draw a grid grob from a loon widget handle
grid.loon(target, name = NULL, gp = gpar(), draw = TRUE, vp = NULL)
target | either an object of class loon or a vector that specifies the
widget, layer, glyph, navigator or context completely. The widget is
specified by the widget path name (e.g. |
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name | a character identifier for the grob, or NULL. Used to find the grob on the display list and/or as a child of another grob. |
gp | a gpar object, or NULL, typically the output from a call to the function gpar. This is basically a list of graphical parameter settings. |
draw | a logical value indicating whether graphics output should be produced. |
vp | a grid viewport object (or NULL). |
a grid grob of the loon plot