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Exploring Spatial Data

The data slot in shp holds a data frame like we are used to working with. However, since it is stored inside a SpatialPolygonsDataFrame, we access the data frame a little differently using the @ operator.

glimpse(shp@data) 

Observations: 808
Variables: 2
$ GEOID10 <fct> 27925, 28754, 28092...
$ ALAND10 <fct> 624688620, 223734670, 317180853 ...

Our data frame has 808 observations of two variables:

  1. GEOID10: the zip code of each polygon
  2. ALAND10: the area (square meters) of each polygon

This exercise is part of the course

Interactive Maps with leaflet in R

View Course

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Glimpse the data slot of shp
glimpse(shp___data)
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