User's Guide: Computer Program with Interactive Graphics for Coordinate Geometry Analysis

摘要

This report is a guide to use of a computer program for coordinate geometry analysis with interactive graphics, called 'GCOGO'. The original program has been revised to provide several additional commands plus graphic output for all commands for which such output would be helpful. The principal new features included in the version documented herein are as follows: azimuths can be measured clockwise from either north or south; a feature allowing reuse of the immediately previous command is provided; as many as 25 curves created by the ALIGNMENT or DEFCV commands can be stored and recalled at any time during an interactive session; GCOGO calculates in single precision rather than employing double precision as was done in the earlier version; the interactive graphics features are intended for use on a Tektronix 4014 terminal having an accompanying hardcopy device; and three new commands which locate points based on different triangle properties have been added.