4 pl = plistxyz({'ab','cd','e','f'}, 1:4, 1:4, 1:4)
5 pl2 = plistxyz([1 2; 3 4], 1:4, 1:4, 1:4)
7 [x, y, z] = coordxyz(pl,'ab')
8 [x, y, z] = coordxyz(pl,{'ab','e','f'})
9 [x, y, z] = coordxyz(pl,{'ab','g','h'})
11 [x, y, z] = coordxyz(pl2,1:3)
12 [x, y, z] = coordxyz(pl2,1:6)