Learning R for Geospatial Analysis

Summary

In this chapter, we covered the basic operations involved in working with vector layers in R. First, we reviewed the classes used to represent spatial vector layers in R, and explored two ways to bring spatial vector data into R (geocoding and reading from a file). Second, we discussed how to examine and modify the attribute tables of vector layers, how to create subsets of layers according to their attribute tables, and how to join new data to an attribute table (either from a separate table or from another vector layer). Third, the major types of geometry-related operations with vector layers, including the calculation of geometrical properties, evaluation of relations between layers, and the creation of new layers based on the existing ...