110211     PLOT: Digital Incremental Plotter Software Package
Version: June 1975
 
Submitted by: Jeffrey Kodosky, Applied Research Labs., Austin, TX
 
Source Language: MACRO-11  Software Required: FPMP or FORTRAN Library
Routines  Hardware Required: DIGITAL Incremental Plotter  Keywords:
Plotting
 
Abstract: This plot package consists of five MACRO-11 source
modules containing FORTRAN callable routines which
implement plotting operations on a Digital Incremental
Plotter. A FORTRAN source tape for a demonstration
program is also included. The subroutines in the
foundation module handle interrupt driven vector
plotting, origin resetting, vector scaling, dotted line
plotting, and Y-motion limiting to prevent loss of
origin. In addition, a subroutine is provided which will
implement a circular buffer to buffer the plot vectors.
The other modules contain utility subroutines which call
the subroutines in the first module. A small lettering
routine containing 64 characters is provided for use
where core space is restricted. A more sophisticated
symbol plotting subroutine exists which has a 157
character repertoire and is expandable to many times
that number. It presently contains upper and lower case
Roman and Greek alphabets and standard math symbols. An
axis plotting subroutine is included which will plot a
linear or logarithmic coordinate axis at an arbitrary
angle.
 
Media (Service Charge Code): Write-Up (AA), Source Listing (BB), One
RX01 Diskette (KA)  Format: RT-11, 600' Magnetic Tape (MA)  Format:
RT-11
 
 
