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- Tau, version 1.50
-
- Desktop graph preparation software. Tau generates publication-quality graphs
- in the form of Draw files, ready to import into your favourite
- word-processor, computer presentation, or DTP. A data worksheet (16 columns
- by 4096 rows) can be filled by keying-in, importing from a file, and/or
- calculation. You determine line patterns and thicknesses, colours, text
- positioning and font sizes, etc. The data worksheet can be redimensioned, if
- you would prefer more rows of data for example.
-
- -----------------------------------------------------------------------------
-
- Copyright © Tim Birks 1993, 1994, 2000, 2001
- Current development Peter Killworth 2001-2005
-
- This software is Freeware, and has been released under version 2 of the Gnu
- GPL. This means that I reserve all rights as author and copyright owner.
- However, you may use, copy, modify and distribute it freely, as are your
- rights under the GPL.
-
- You use this software entirely at your own risk; I accept no responsibility
- for any consequence of use. Mind you, I wouldn't describe it as being
- particularly dangerous . . .
-
- -----------------------------------------------------------------------------
-
- Changes since version 1.10
-
- 1.50:
- * This version permits 24-bit colour. The user can specify colours for the
- line and/or character and/or fill for each set of y-values (already added
- in 1.30). In addition, the colour for the frame (axes, labels and
- annotations), for a possible background fill of the graph,and for the
- border and fill of the graph key (if selected) can also be chosen
- and stored in style files. In 256-colour modes, !Tau does what it can
- to represent the 24-bit colours, like any other application.
-
- 1.41:
- * This version permits large powers in labels to be replaced by k (for
- thousands), M (millions) and G (billions). A minor bug in data readin
- is also fixed.
-
- 1.40:
- * A new feature has been added. While !Tau has always been able to plot
- multiple data with the same x-values, there are occasions, particularly
- when working with observed data, in which one has several sets of (x,
- y) data which need plotting on the same graph. In previous versions,
- the workaround has been to plot each pair separately and superimpose
- the graphs afterwards, which isn’t very neat. In 1.40 one can turn on
- "Many Xs" which allows each y column of data to have a specific x
- column associated with it for all plotting purposes; they can all be
- plotted simultaneously.
-
-
- 1.30:
-
- * The size of the data worksheet has been doubled again (default 4096 rows
- and 16 columns).
- * The graph lines and symbols can be in any colour.
- * The line styles can be user-defined.
- * F3 produces a rapid save in DrawFile format.
- * A facility for globally editing data has been added.
-
- 1.25:
-
- * The size of the data worksheet has been doubled (default 2048 rows and
- 16 columns).
- * The dimensions of the worksheet can be changed by the user, provided the
- total number of cells does not exceed 2048x16, and the number of columns
- does not exceed 64.
- * The internal format of the TauFile and TauStyle files has been changed
- to accommodate the resizable worksheet. Old format files are compatible
- with the new version of Tau.
- * The "Plot (many)" option allows the user to change the plot styles of
- a number of columns in one go.
- * A number of bugs have been fixed.
- * Option to preview graphs, also to view any drawfile dragged in.
-
- -----------------------------------------------------------------------------
-
- With thanks to:
-
- Chris Pannell for suggestions, and for acting as a RISC OS 2 guinea pig.
-
- Alban Killingback for access to a RISC OS 2 machine; and the former denizens
- of room 328, where that machine was kept, for their patience.
-
- Various users, for reports of bugs and suggestions for improvements.
-
- -----------------------------------------------------------------------------
-
- Tim wrote Tau because he needed to prepare x-y graphs for publication in
- scientific journals and reports. The alternative was a PC, Harvard Graphics™,
- and sticky tape. Hence it is geared towards the production of a relatively
- small number of graphs with the maximum of user control over such niggly
- things as line thicknesses and dash patterns. Of course the results still
- leave scope for improvement, but that can always be done in !Draw. Note also
- the complete lack of junk such as pie charts and the like - if you want pie
- charts, you are probably in advertising or marketing, so go use Harvard :-).
-
- Tau was originally written in BBC Basic V on a 2Mb Acorn A4000 computer
- with RISC OS 3.1. It is believed to work with RISC OS 2 - the problem with
- the Save dialogue box was fixed. Current development work uses RISC OS 4.02
- and RISC OS 3.7.
-
- This version of Tau is distinctly less incomplete than its predecessors.
- If you have any constructive criticism, bug reports, or suggestions for
- features you think would be useful, please get in touch with the current
- developer.
-
- Email: pystab@hotmail.com (Internet fashion)
-
- Current development: Peter Killworth (p.killworth@soc.soton.ac.uk)
- Snail: Southampton Oceanography Centre, Empress Dock, Southampton SO14 3ZH,
- United Kingdom.
-