---
title: "Branches vs. Primitives"
author: "Michael D. Sumner"
date: "`r Sys.Date()`"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Branches vs. Primitives}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

Branches are the traditional rings and line-strings of coordinates for polygon parts and lines. A multi-point may have one or more vertices etc. 

Primitives are the simplicial complex - polygons are decomposed to triangles, lines to line segments, and points to vertices.