Learning Guide Learning Guide

124 • Chapter 4: Graphics> animate3d( cos(t*x)*sin(t*y), x=-Pi..Pi, y=-Pi..Pi, t=1..2,> frames=16 );Section 4.2 describes three-dimensional parametrized plots. You canalso animate these.> animate3d( [s*time, t-time, s*cos(t*time)],> s=1..3, t=1..4, time=2..4, axes=boxed);2 2 2 22 2 2–32 212To animate a function in a coordinate system other than the Cartesian,use the coords option. Enter the following examples into Maple toview the animations. For spherical coordinates, use coords=spherical.> animate3d( (1.3)^theta * sin(t*phi), theta=-1..2*Pi,> phi=0..Pi, t=1..8, coords=spherical );For cylindrical coordinates, use coords=cylindrical.> animate3d( sin(theta)*cos(z*t), theta=1..3, z=1..4,> t=1/4..7/2, coords=cylindrical );For a list of the coordinate systems in Maple, refer to ?plots,changecoords.4.4 Annotating PlotsAdding text annotation to plots is possible in a variety of ways. The optiontitle prints the specified title in the plot window, centered and near thetop.