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<TITLE>Extrema Main Page</TITLE>
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<p><font size=+3 color="green">Data Analysis and Visualisation Software</font></p>
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<P><font size=-1 face="Arial black" color="red">EXTREMA</font> is a high level,
interactive programming environment with user friendly graphics
and sophisticated mathematical analysis capabilities. Over <code>200</code>
numeric and character functions are provided, as well as over <code>30</code>
operators, providing all of the operations of simple calculus, along with
powerful curve fitting, filtering and smoothing techniques, and employing a
dynamic array management scheme allowing arrays limited in size only by
system resources. Algebraic expressions of arbitrary complexity are
evaluated using a lexical scanner approach. Line graphs, histograms and pie
charts, as well as contour, density and surface plots are available. The
user interface is a command language with a simple to use and easy to learn
syntax, incorporating basic elements of a structured programming language
including conditional branching, looping and subroutine calling
constructs.</P>
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