Operations With Vector Data II
Content for Wednesday, September 27, 2023
Now that you have the complete picture of predicates, measures, and transformers; it’s time to use them on some actual data. This lecture is meant to be the “practical” application of the ideas you’ve learned in our previous discussions of vector data and give you enough tools to begin to subset your data to the records and attributes of interest, calculate new spatial metrics, and generate new geometries based on existing data.
Readings
The introductory vignette for the
sfpackage has a lot of useful info onsfobjects and conventions.Section 2.2 on Vector Data and Sections 5.1-5.3 on Geographic Operations in Lovelace et al. (Lovelace et al. 2019) - for more details about vectors and geometric operations on vectors.
Section 3.1 and 3.2 of Spatial Data Science, a
bookdownproject by Edzer Pebesma and Roger Bivand (of thesf,sp,rgeos, andrgdalpackages).
Objectives
By the end of today, you should be able to:
Translate pseudocode commands into functional workflows
Articulate the importance of key arguments to
sffunctionsGenerate new attributes and geometries from existing data.
Slides
The slides for today’s lesson are available online as an HTML file. Use the buttons below to open the slides either as an interactive website or as a static PDF (for printing or storing for later). You can also click in the slides below and navigate through them with your left and right arrow keys.