Figure 2. The help window gives you information on all of the available functions,
operators and commands.
window (Figure 1). One of the most
important buttons is the help button. In
the analysis window, you can bring it up
by clicking on the question mark (Figure
2). In the help window, you can get more
detailed information on all the functions
and operators available in Extrema.
Extrema provides 3-D contour and
density plots. For 2-D graphing, you can
control almost all the features, like axes,
plot points, colors, fonts and legends.
You also can do some data analysis from
within Extrema. You can do various types
of interpolation, such as linear, Lagrange
or Fritsch-Carlson. You can fit an equation
to your data with up to 25 parameters.
Extrema contains a full scripting language
that includes nested loops, branches and
conditional statements. You either can
write out scripts in a text editor or use
the automatic script-writing mode that
translates your point-and-click actions to
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