The data processing and plotting program for Acorn RISC OS
Now 32-bit compatible, works on RISC OS 5!
Now Shareware! Send £10 donation, or £20 to get a 150-page manual too.
Downloads updated 18/4/2005
If your need is for simple data entry, manipulation and plotting, or
for analysing large quantities of computer-acquired data, and printing
it out for your notebook or for publication, then Lab Assistant is for
This powerful, multi-tasking, menu-driven application includes the
- very fast loading and saving, loads huge files (eg 1MB) in seconds
- data may be stored in a compressed format to save disc space/memory
- various formats; up to 22 columns, no limit to the number of rows
- a file may contain many sets of data with the same columns
- can include values of extra parameters which do not change during a
sweep, and textual information at the start of the file
Click to see examples (sizes 8K, 11K, 19K, 49K):
- plots data as curves with various line styles, symbols and colours
- plots any function f(x)
- zoom in or out using the mouse
- histograms; 3D plots using grey-levels or colours to show third
- labels, including sub- and superscripts, fonts, symbols and kerning
- quick standard graphs or perfect publication-quality figures
- fully customisable with many windows for choosing settings, for example:
- uses standard printer drivers; monochrome or colour prints
- produces Draw files for use in documents; also includes Draw files
in plots - this can also include equations from a formula editor
- extremely flexible command language for producing complicated plots
- command files can be written automatically for subsequent editing
- a list of points can be picked from a graph using the mouse
- data appears in a window for easy entry and editing
- a column can be set to some function of the other columns
- facilities to find data satisfying some criterion or to
exclude/include such rows
- block operations - move, copy, delete, save, integrate, etc.
- sorting, splining (to produce equally-spaced points), histograms,
- integrating or differentiating a column; renumbering sweeps; adding
- all the minima and maxima in a file can be extracted
- Fourier transforms, power spectra, autocorrelations
- fitting (line, polynomial, linear combinations, or non-linea
function, up to 10 adjustable parameters)
- splines to produce eg equally-spaced points (beta, exact or smooth)
- smoothing and filtering (low, high or band pass, band stop,
- extremely powerful command language for automating calculations
- all commands can be given interactively or in a macro file
- macros can be produced automatically by recording interactive use
- BASIC-like variables and expressions; loops, conditionals
- user-defined functions for complicated calculations
There is a very powerful and sophisticated
companion program to acquire data using a wide range of instruments
(including those with an IEEE interface). Simple commands allow one
or more sources to be swept, while reading up to 12 channels of data
from different instruments. Single sweeps or large sets of
measurements may be performed with ease, interactively or eg
overnight. Data is plotted on the screen as it is acquired, and you
can zoom in or out and replot it without disturbing data collection.
The data is completely compatible with Lab Assistant, and information
can be stored at the start of each sweep recording voltages and other
settings. A new version now exists for use with National Instruments'
Lab View on most other types of computer.
Downloading full version
Click here to download the full
version (691K, uncompresses to 1080K). It is the full version of the program
but without a full manual. This archive is kept separate from the extras
(below) since it is periodically updated, so you do not need to download
everything each time. Please do also take a copy of at least the
tutorial (below); the extras archive is also well worth taking,
as it includes example files, help files, etc. If you are at least
moderately interested in using Lab Assistant, please don't hesitate to e-mail
the author (Dr
Chris Ford) for help to try out things that might be useful to you but
which are not covered in the tutorial. You are also welcome to suggest
improvements and additions.
Click here to download extras (examples
etc) (322K, uncompresses to 514K).
Click here to download tutorial (as a 57K
Click here to download tutorial (as a 60K
archived !Publisher file, uncompresses to 119K).
Click here to download tutorial (as a
29K archived html file, uncompresses to 58K).
Click here to view the tutorial (58K).
Click here to download the full 150-page manual
(4.35MB). This is intended for printing as an A5 book. It would be
easier to register the software (see below)!
Note that you need David Pilling's !SparkPlug or equivalent to decompress
these archives. To download a self-extracting version of !SparkPlug, click
here, save the resulting web page to disc, then change the filetype of
that file to BASIC, and double-click on it.
For more information, please contact: Dr Chris Ford,
Cavendish Laboratory, Madingley Road, Cambridge, CB3 0HE, UK, (tel: 01223
Price: please consider registering the software by sending the author
£30 if you make heavy use of the program, or a mere £10 for
personal use. Add £10 for a full (and very useful!) 150-page manual.
The source code is available on request.