Introduction

plt is an alternative to MatLab's plot and plotyy routines for 2D applications. Like plot, plt commands can be typed at the command prompt to display your workspace arrays and can also be the core of your .m graphical applications. Some of plt's advantages are:

Optimized for data exploration
Improved zooming, panning, and auto-scaling controls
Workspace plotting (interactive selection of variables to plot)
Automatically generated legend with powerful trace selection controls
Up to 99 traces on a single axis (or more if a legend isn't needed)
Support for dual y-axes (left/right linkable)
Support for sub-plots, each with individual cursor readout.
Fast and easy cursor movement
Delta cursor provides easy difference readout
RMS, mean, y/x ratio & abs(x+yi) readouts
Peak/Valley finder
Better looking grid lines with selectable color
User-entered annotations
User editing of trace properties and figure colors
Mouse and keyboard driven data modification
Support for metric prefixes
Quick linear/log toggling for x or y axes
Display expansion history
Flexible command-line interface
Includes advanced GUI components with sample GUI programs
Extensive on-screen help with 22 example script and function .m files
Congenial "customer" support & receptive to suggestions from users

MatLab release 12.1 (ver 6.1) or later is required to run plt and all the example code. It has been tested extensively under all MatLab releases from 12.1 to R2009b under Windows XP and Windows 7. Only brief testing has been done with Vista and a few Unix based platforms.

I hope using plt enhances your MatLab experience. Please let me know about any problems or suggestions you have relating to plt. You can reach me at paul@mennen.org.