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

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