How to create a closed surface cylinder using patch function?

1.0000 0.9511 0.8090 0.5878 0.3090 0.0000 -0.3090 -0.5878 -0.8090 -0.9511 -1.0000 -0.9511 -0.8090 -0.5878 -0.3090 -0.0000 0.3090 0.5878 0.8090 0.9511 1.0000 1.0000 0.9511 0.8090 0.5878 0.3090 0.0000 -0.3090 -0.5878 -0.8090 -0.9511 -1.0000 -0.9511 -0.8090 -0.5878 -0.3090 -0.0000 0.3090 0.5878 0.8090 0.9511 1.0000

m = 2×21

0 0.3090 0.5878 0.8090 0.9511 1.0000 0.9511 0.8090 0.5878 0.3090 0.0000 -0.3090 -0.5878 -0.8090 -0.9511 -1.0000 -0.9511 -0.8090 -0.5878 -0.3090 0 0 0.3090 0.5878 0.8090 0.9511 1.0000 0.9511 0.8090 0.5878 0.3090 0.0000 -0.3090 -0.5878 -0.8090 -0.9511 -1.0000 -0.9511 -0.8090 -0.5878 -0.3090 0

n = 2×21

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

figure()

surf(l,m,n)

hold on

patch(l(1,:),m(1,:),n(1,:),'r')

patch(l(2,:),m(2,:),n(2,:),'g')

hold off

title('Top End')

figure()

surf(l,m,n)

hold on

patch(l(1,:),m(1,:),n(1,:),'r')

patch(l(2,:),m(2,:),n(2,:),'g')

hold off

view(30,-30)

title('Bottom End')

The cylinder results are simply matrices of two vectors defining the top and bottom of the cylinder (unless a particular shape is supplied for the radius argument, then there are more rows to the cylinder output and only the first and last rows define the ends). To put ‘caps’ on either end, create separate patch objects for each end vector, and supply whatever colours are desired.

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