110546 HP-7225A HP-GL Pen Plotter Library Version: May 1982 Submitted by: Ken Sutin, Case Western Reserve University, Cleveland, OH Operating System: RT-11 V4.0 Source Language: FORTRAN IV, MACRO-11, RATFOR Y20.5 Software Required: RATFOR useful but not necessary. Hardware Required: HP-7225A Pen Plotter Keywords: Graphics, Hewlett Packard, Plotting Abstract: This software consists of a collection of subroutines that have been written for the Hewlett Packard 7225A pen plotter. Included in this software is support for the inherent HP Graphics Language Instruction Set and several other high level functions as described below. Mapping from virtual user units to physical plotter units occurs with respect to the specified plotter units (e.g. in, cm), the plot origin and a global plotting factor, which allows the entire plot to be reduced or enlarged by calling one subroutine. Data can be plotted by specification of coordinate pairs, or a single data vector may be plotted as a function of a fixed X-increment (e.g. if the data are interval related). Coordinate data to be plotted may be specified in integer or floating point form, and the data may be scaled by an offset and a gain factor. Some other functions that have been written are: move to coordinate, draw to coordinate, label, axis, histogram and digitize. Media (Service Charge Code): Two RX01 Diskettes (KB) Format: RT-11, 600' Magnetic Tape (MA) Format: RT-11