[R] help with ggplot backgrounds
hadley at rice.edu
Mon Nov 14 06:34:04 CET 2011
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On Fri, Oct 28, 2011 at 5:03 PM, RanRL <rnrlrn at gmail.com> wrote:
> Hi, I have two questions regarding plotting of this dataset:
> Product Color StoreA StoreB StoreC Price
> A Red 4 2 3 78
> Blue 5 2 2 78
> Greem 4 3 2 80
> B Red 3 ................
> And so on (Not all products have same colors).
> I made 2 plots: one is a scatter where x=Price and y=Values (of different
> stores). The different stores are facet_wrapped, and Color is indicated by
> point color while Product by point_shape.
> Second plot is a polar plot of geom_bars with position="dodge" for all
> Products to differentiate the colors. The y value is the value for each
> store (Price is not represented).
> My questions:
> 1. for the first plot, I want to make a background area split into 3, top
> right is red (indicating high-price/high-values), middle is yellow, the rest
> is green (these are kind of reverse-log areas, like in heat maps).
> 2. for the second plot, the red-yellow green are just background geom_rects
> filled in, but I cant figure out how to specify the xmin and xmax for this
> (since they are discrete variables).
> Any help will be appreciated, thanks.
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Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
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