Plotting curves with Matlab

• See the examples in Matlab instructions for MATH 241 for plotting 2D curves with plot, ezplot and plotting 3D curves with plot3, tubeplot3, ezplot3.

  Note: You must download the files tubeplot3.m, nice3d.m and put them in the same directory as your m-files.

  Example for plotting 2D curve r(t) = (t², t³) for t in [-1,1] with plot

  tv = -1:.01:1;
xv = tv.^2;     % must use .* ./ .^ instead of * / ^
  yv = tv.^3;
plot(xv,yv); axis equal

  Example for plotting 3D curve r(t) = (t, t², t³) for t in [-1,1] with tubeplot3

  tv = -1:.01:1;
xv = tv;
yv = tv.^2;     % must use .* ./ .^ instead of * / ^
  zv = tv.^3;
tubeplot3(xv,yv,zv); nice3d

• Matlab example: Plotting curve with vectors T,N