viridis topic

Draw heatmap simply using a tidy data frame

stemangiola

A header-only, single-file library for colormaps written in C++11

yuki-koyama

Introduction to simple mapping in R: georeferencing lat/long coordinates, thematic mapping and choropleth maps, using simple features, leaflet, and tmap and mapview.

libjohn

R library for assigning colours to values

SymbolixAU