Hidden 3D view

Sometimes, 3D graphs can be hard to interpret. For instance, the graph of

z = 2(x² + y²)exp(-x² - y²)

could be seen by typing the following:

splot [-2:2] [-2:2] 2*(x**2 + y**2)*exp(-x**2 - y**2)

Note that in this graph, the set grid command was used. To make viewing this easier, you can use the set hidden3d command. For instance, if you typed the following, you would get:

set hidden3d
replot

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