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Isocontouring widget
Describes the histogram and how to display an isocontour.
sargis
This tutorial introduces 3D Grid/Volume Rendering widget and explains how to use it.
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When user clicks on Isocontour button, a histogram for the currently
selected grids is plotted, showing the distribution of the scalar field
defined on the gird. The X-axis of the histogram goes from the minimum
to the maximum of the scalar field and the Y-axis shows the frequency
(i.e., the number of counts for each bin). Shift-click inside the
widget to add isocontour. This should create isocontour corresponding to
the isovalue on the X-axis. Move the bar to change the isovalue.
Right-click on the bar to open a menu shown on the right. This menu
lets you change the properties of selected isocontour such as the
isovalue, color and transparency. You can also delete or show/hide
selected isocontour. Set 3D Surface Properties option opens DejaVu GUI
where you can make the surface wireframe (click on Front and select
line under Material properties), among many other things. Note that you
can add as many surfaces as needed and they all be saved when you use
File → Save Settings menu.
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