Before revision: conic, pseudocylindrical, azimuthal)Slocum, Terry A., Robert B. McMaster, Fritz C. Kessler, Hugh H. Howard, Thematic Cartography and Visualization, 3rd Edition, Pearson-Prentice Hall, 2009, p.201 These are usually secondary to the primary purpose of the map, so graticules are often drawn to be relatively low in the Visual hierarchy .
After revision: conic, pseudocylindrical, azimuthal)Slocum, Terry A, Robert B. McMaster, Fritz C. Kessler, Hugh H. Howard, Thematic Cartography and Visualization, 3rd Edition, Pearson-Prentice Hall, 2009, p.201 These are usually secondary to the primary purpose of the map, so graticules are often drawn to be relatively low in the Visual hierarchy .