How to visualize isovalues and/or isolines.

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Use the ``mesh value :'' option in the working window, to choose a variable. The default variable name is the first defined.
set the ``Ivalue'' and ``Ilines toggles on or off, and push the ``redraw'' button.
You can change the number and values of isovalues and/or isolines with the toggle ``Set Isos''.

An example of isovalues and isolines is given in figure 1.13.

**Figure 1.13:** Isovalues and isolines.
$\begin{figure}\centerline{\psfig{figure=Figures/isos2d, width=14cm,clip=3D, bbllx=43pt,bblly=128pt, bburx=568pt,bbury=662pt}}\end{figure}$

Robert Fournier 2002-09-13