1986•NASA Tech BriefsRequires access

Graphics Programs for the DEC VAX Computer

D. Long

Abstract

Variety of plots available in video or printed form. LONGLIB library of computer programs set of subroutines designed for vector plotting on cathode-ray tubes and dot-matrix printers. LONGLIB subroutines invoked by program calls similar to standard CALCOMP routines. In addition to basic plotting routines, LONGLIB contains extensive set of routines to allow viewport clipping, extended character sets, graphic input, gray-level plots, polar plots, and three-dimensional plotting with or without removal of hidden lines. LONGLIB written in FORTRAN 77 and C for batch execution.

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Key concepts: Subroutine, Computer graphics (images), Computer science, Viewport, Graphics, Fortran, Computer graphics, Set (abstract data type)