Cartographer provides interactive maps in R Markdown documents or at the R console. These maps are suitable for data exploration. This package is an R wrapper around Elijah Meeks's d3-carto-map and d3.js, using htmlwidgets for R.

Cartographer is under very early development.

To install the development version from GitHub, first install devtools. Then install Cartographer:

devtools::install_github("lmullen/cartographer")

Cartographer maps are composed using a series of functions that add point, tile, or polygon layers and control map options like colors, sizes, and zoom. For more explanation, see the package vignette online or in R by running vignette("cartographer"). Below is the code for and a screenshot of a sample map.

cartographer(region = "united states") %>%
  tile_layer() %>%
  points_layer(data = dioceses, color = "green", size = 4,
                label = "Dioceses") %>%
  points_layer(data = archdioceses, color = "purple", size = 8, opacity = 1,
                label = "Archdioceses")

This code is released under the MIT License. The included JavaScript libraries are used under the terms of their own licenses. See the directories in inst/htmlwidgets/lib/ for their licenses.