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-3darrowplot: Arrowplot of 3D-fields

We now enter the section -3darrowplot, and tell gd1.pp that we want to look at the electric field pattern of the first stored field:

 -3darrowplot
     symbol= e_1
     doit

Abbreviated we may say eg.

 -3da, sy e_1, d

We can look at several plots simultaneously. We just say that we want to have another plot, and gd1.pp starts another instance of gd1.3dplot to show the plot. To have a look at the first three modes, we say eg.

 quantity= e
 solution= 1, doit
 so 2, doit
 so 3, doit

The figure 3.1 shows the resulting desktop.

**Figure 3.1:** Screenshot of the desktop. **gd1.pp** has popped up three instances of **gd1.3dplot**, showing the electric field of the first three modes.
$\begin{figure}\centerline{ \psfig{figure=FirstThreeModes.PS,width=723.0pt} }\end{figure}$

Subsections

H-Fields