Also, pl.exe for win32 now available.
Many types of data displays can now be created quickly from the command line using these prefabs:
Or, you can write custom ploticus scripts for maximum power and flexibility:
is free software that generates plots and graphs from data. The primary component is the pl program. Create basic plots quickly from the command line using ploticus prefabs, or write customized scripts for maximum power and flexibility. You can invoke it manually, or automatically from other programs, or even as a CGI program. Produce image graphics (PNG, GIF, JPEG) for web pages and slide presentations. PostScript and EPS is supported for paper reports and posters; graphs can also be viewed interactively on X11 displays. Accepts tabular ascii data input. Numerics, alphanumeric categories, dates and times (in a variety of notations) can be plotted directly. You can also compute frequency distributions, correlation coefficients, curves, regression lines, medians, quartiles, etc. Developed on Solaris / unix, it is available for a number of platforms.
Getting started: The easiest way to get started is to use one of the available prefabs, and just supply certain key parameters on the command line. For example, suppose you want a pie graph, and you have a tab-delimited data file called mydata with labels in field 1 and values in field 2. You could generate the pie graph in PNG format by issuing this command, which uses the pie prefab:
The PNG result would be in the file pie.png.
If you eventually need more customized graphs, you can code your own scripts. One way to proceed is to look at the gallery of example scripts, find one that is similar to what you want, download it, and modify it to suit. For example, suppose you have downloaded and modified a script called bars4.htm; you could generate your result in EPS format using this command:
The EPS result would be in the file bars4.eps.
The author and maintainer is Stephen C. Grubb. I now have some other free software tools available, too.
data display engine
Copyright Steve Grubb