FORTRAN PROGRAM FOR PLOTTING TWO-DIMENSIONAL GRAPHS,

Abstract : A computer program in FORTRAN IV language enables users to plot two-dimensional graphs with the standard output printer during the execution phase of any FORTRAN IV or MAP (machine language) main program. This FORTRAN program consists of three subroutines, GRAPH, PACK, and PLACE; and one that is optional, SELECT. Subroutine GRAPH incorporates PACK and PLACE, which are MAP subroutines. These two MAP subroutines conserve computer storage and time required to print the output of the program. Subroutine SELECT is used to define the beginning and end points of the graph scale. If SELECT is not used, the minimum and maximum scale values for the axes must be defined in the main program. The four subroutines are fully described, and the computer listings for them are given. Use of the above subroutines in a main program is demonstrated with a sample main program, called LOOK, as a guide for incorporating the subroutines in any main program. Sample graphs for LOOK are shown as printed by the computer. (Author)