Explore and Plot by Vector Layer Attributes

Overview

Questions

• How can I compute on the attributes of a spatial object?

Objectives

• Query attributes of a spatial object.
• Subset spatial objects using specific attribute values.
• Plot a vector feature, colored by unique attribute values.

Prerequisite

Things You’ll Need To Complete This Episode

See the lesson homepage for detailed information about the software, data, and other prerequisites you will need to work through the examples in this episode.

Load the Data

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We will continue using the sf, terra dplyr and ggplot2 packages in this episode. Make sure that you have these packages loaded. We will continue to work with the three ESRI shapefiles (vector layers) that we loaded in the Open and Plot Vector Layers in R episode.