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1990-12-28
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From: fs@uwasa.fi (Filip Sawicki LAKE)
Newsgroups: comp.graphics,alt.sources
Subject: Interactive Chart Program
Message-ID: <1990Apr5.092427.24874@uwasa.fi>
Date: 5 Apr 90 09:24:27 GMT
I have written an interactive chart program (no name yet) and I am
looking for beta version testers. Program is checked and more or less
bug-free, so I am expecting only suggestions for enhancements.
Program is based upon Gnuplot code, and uses a similar language for
the user interface. Four parts come directly from Gnuplot: help
facility, input scanner, doc maker and terminal drivers. Maybe, if
well tested and approved, program will be a part of Gnuplot in the
future.
If anyone is interested, I will e-mail him/her the program. If more
than twenty persons are interested, chart will be posted to
alt.sources. In any case, there's no full documentation yet.
Code can be freely redistributed if found useful, as long as
Copyright messages from Gnuplot and my own are maintained. PLEASE DO
NOT REDISTRIBUTE MODIFIED CODE, -- rather e-mail me your suggestions.
Gnuplot Copyright (C) 1986, 1987, 1990 Thomas Williams, Colin Kelley
John Campbell, David Kotz, Russell Lang
---------------------------------------------
Chart program features:
* Interactive user interface, batch files accepted, on-line help
* Highly customizable output form (size, [auto]labeling etc.)
* Four main chart styles :
- normal side-by-side (adjacent) bars
- stacked bars
- layer-over-layer bars
- pies
* Many adjustable variations of styles:
- pie charts with slices exploding in any direction, combining
slices below specified threshold, drawing clockwise or counter-
clockwise
- bar charts with any value for base, drawn in any order with any
gravity (left, right, top, bottom of page)
- and lots more
* Drawing from or across several data files
* Accepted input:
- Gnuplot files
- private format
- any fixed-field-length (e.g. SAS) files
* Partial input and missing values supported
* Internal vector font for better labeling and for terminals that
cannot rotate text
* Wide range of supported terminals (well, it's a Gnuplot feature)
Chart faults:
* Gnuplot bugs
* Only 2D graphics by now (3D bars later ... probably)
* And, the most important, only one pie chart can be drawn at once. I
couldn't find the _optimal_ algorithm to fit k pies on the n x m
screen, for any given k,n,m :-( :-(. Any ideas will be appreciated.
---------------------------------------------
fi.
(Piotr Filip Sawicki fs@uwasa.fi)
[ Please specify whether you need the full package, or stripped
version without files borrowed from Gnuplot ]