Focplot

Summary

FOCPLOT is a program library utility designed to adapt the Calcomp plotting package (DECUS No. 8-168) for use with FOCAL-12 on a LINC system. The program allows users to plot data that has been written to LINC tape files in an unsigned integer format.

Key features and requirements of the program include:

• Data Requirements: Users must store X and Y vectors in separate FOCAL tape files. Data points can be up to three tape blocks long and include positive or negative numbers.
• User Interaction: The program interactively requests data location parameters (such as the starting block number) and annotation details at runtime.
• Scaling: All data scaling must be performed by the user within FOCAL prior to plotting.
• Optional Features: For plotting axes and legends, the user must reassemble the included overlay program, FOCAXIS. This overlay contains the necessary text strings and parameters for axis construction.
• Flexibility: FOCPLOT can function without the FOCAXIS overlay if axes and legends are not required. The user is responsible for manually setting the reference location for the plot on the page.