tigris package changed to import Census spatial files as
sf objects by default, rather than sp objects. This caused an error
in later code that worked with the objected being imported in the vignette.
We have resolved this by explicitly requesting the object from tigris
be a sp class in the vignette code. NEWS.md file to track changes to the package.ggmap within vignette and README examples.Add the following code to your website.
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