Hi
Here's one way to approach it ...
ggplot(data.frame(x=1:10, y=1:10)) +
geom_polygon(aes(x=xx, y=yy), fill="grey70",
data=data.frame(xx=c(0, 0, 4, 4), yy=c(0, 11, 11, 0))) +
geom_point(aes(x=x, y=y))
... (supply a separate data source for the background region polygon).
Paul
On 4/06/2012 4:18 a.m., Dominic Comtois wrote:
I'd like to create a plot similar to this one from Kochanska et al.
(Development and Psychopathology, 2011):
<http://pages.videotron.com/do999/r-help/Kochanska_graph_ros.jpg>
http://pages.videotron.com/do999/r-help/Kochanska_graph_ros.jpg
I am new to ggplot2 and can't see any obvious way to create distinct
coloured regions for the background, nor can I find any relevant examples.
Any guidance appreciated.
DC
PS: The context is practically the same as the one from the image (Gene x
Environment interaction study). I used the following tool to find the
regions of significance, if this is of interest to anyone:
<http://www.quantpsy.org/interact/mlr2>
http://www.quantpsy.org/interact/mlr2
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Dr Paul Murrell
Department of Statistics
The University of Auckland
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and provide commented, minimal, self-contained, reproducible code.
