Color Brewer is an invaluable resource for providing color schemes for choropleth mapping and other visualizations. CARTO also makes their own color schemes available for use. Also see the Adobe page for color schemes. You will surely need to install at least a few external packages to work with geospatial data. We will list here a number of the most useful packages, but there are many others. Functionally replaces the sp package which is still supported.
Krygier, John, and Denis Wood. Peterson, Michael P. Interactive and Animated Cartography. Robinson, Arthur H. Morrison, Phillip C. Muehrcke, A. Jon Kimerling, and Stephen C. Elements of Cartography , Fifth Edition. Slocum, Terry, Robert B. McMaster, Fritz C. Kessler, and Hugh H. Wood, Clifford H. Peter Keller, ed. Cartographic Design: Theoretical and Practical Perspectives. Bertin, Jacques.
Semiology of Graphics: Diagrams, Networks, Maps. Brewer, Cynthia A. British Cartographic Society. They use various gazetteers to help them determine locations of area features, like bodies of water, buildings and landforms.
For example, The Fuzzy Gazetteer database helps identify geographic features without the exact name. Cartographers also use calculators for distance and time, such as the World Time Zone Map of standard time zones.
Cartographers use several technologies, including radar-based surveillance systems and global positioning system GPS receivers, but they also take advantage of web tools available through cartographic computer programs.
For example, most cartography software includes a latitude and longitude tool that indicates details for a selected location. Programs also include options to mark, move or calibrate specific points or areas on maps to highlight special landmarks or calculate distances between two locations.
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