Automatic Contour Map Some methods for contour mapping by means of a digital plotter are discussed, and a new method is presented that is simple enough to be implemented by programs with a rather small number of instructions (about 120 FORTRAN IV instructions are required). Comparisons with some methods proposed by other authors are also performed, A FORTRAN IV program implementing the proposed method is available at the Istituto di Elettrotecnica ed Elettronica, Politencnico di Milano. CACM July, 1969 Cottafava, G. LeMoli, G. contour map, level lines, digital plotting, function scanning 3.10 3.13 3.14 3.16 3.20 3.24 CA690709 JB February 17, 1978 8:59 AM 1871 5 1871 1871 5 1871 1871 5 1871 3062 5 1871 1871 6 1871 1925 6 1871