[R] US States percentage change plot

[Greg Snow]

Unless your audience is mainly interested in Texas and California and is completely content to ignore Rhode Island, then I would suggest that you look at the state.vbm map in the TeachingDemos package that works with the maptools package.  The example there shows coloring based on a variable.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Michael Charles Bailey I
> Sent: Wednesday, October 12, 2011 6:46 PM
> To: r-help at r-project.org
> Subject: [R] US States percentage change plot
> 
> Hi, I would like to make a plot of the US states (or lower 48) that are
> colored based upon a percentage change column. Ideally, it would
> gradually
> be more blue the larger the positive change, and more red the more
> negative
> is the change.
> 
> The data I have looks like:
> 
>        State Percent.Change
> 1    Alabama    0.004040547
> 2     Alaska   -0.000202211
> 3    Arizona   -0.002524567
> 4   Arkansas   -0.008525333
> 5 California    0.001828754
> 6   Colorado    0.011116150
> 
> I have read help for the maps library and similar plots online but
> can't
> grasp how to map the percentage.change column to the map. thank in
> advance,
> 
> Michael Bailey
> 
> 	[[alternative HTML version deleted]]
> 
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