QUIP1 - Quick Plot in Quadrant l

FOCAL8-12

D. A. Dalby, Bedford Institute of Oceanography, Dartmouth,

Nova Scotia, Canada

The implementation of an additional extended function named

"FLOT" in FOCAL to generate a straight line plot on a CalComp

563 incremental plotter considerably increases the

usefulness of FOCAL for simple plotting applications. QUIP

is a program in FOCAL language which demonstrates one use

of the FLOT function: to generate a general XY plot in the

first quadrant. The user simply types the control parameters

and (x,y) values on the keyboard. An infinite set of plotting

symbols of continuously variable size, width-to-height ratio,

symbol order (number of strokes), and positive (counterclockwise)

or negative (clockwise) rotation is available by

simply typing the appropriate parameters on the keyboard.

Minimum Hardware:
PDP-8, ASR33, CalComp 563

Incremental Plotter

Catalog: July 1973