[R] (x,y) coordinates for grid.text()

[hadley wickham]

>  When using grid.text it seems my supplied (x,y) coordinates are being
>  plotted only in npc (normalized parent coordinates) where (.5,.5) is the
>  center of the graph.  How do I allow (x,y) to be coordinates corresponding
>  to the (x,y) values in the graph?   The examples in ?grid.text seem to do
>  this.  (I think the problem lies in how x and y are defined with respect to
>  unit ).   Any help much appreciated.  Sample code below.

Have you read the documentation for grid.text?  You need to read the
description of the default.units argument and then read ?unit.

Hadley

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