Harold V. McIntosh
Departamento de Aplicación de Microcomputadoras
Instituto de Ciencias, Universidad Autónoma de Puebla
Apartado Postal 461, (72000) Puebla, Puebla, México.
March 18, 1989
revised January 15, 2001
Techniques used to plot contours in the package <PLOT> are described. Aside from its using traditional interpolation formulas, <PLOT> is characterized by taking pairs of triangles rather than rectangles for primitive domains, and for tracing out one entire contour before starting another, to minimize pen raising and lowering.