Get the packages library(sf) library(dplyr) Spatial features from first principles Early on my geospatial learning path I came across Barry Rowlingson’s cheat sheet for R’s sp and raster librarys. I find it really useful to build simple test examples from scratch to make sure I know what I’m doing before diving in to large data sets and being overwhelmed be multiple tricky edge cases (or worse, corner cases).
Quickly add higher-level classification column to data. A very common use-case is to add a column to a table of data that indicates a category for each row where the category is dependent on the value of one of the table column.
Given a point, what highway is it on and what direction does that highway go? I’m kicking off this blog with a geospatial example.