知道点的坐标，如何用MATLAB显示3D图形

举例说明：
已知3维点坐标(a,b,c)无序排列。
a = [9, 8.8, 5.8, 9.8, 6.4, 1.2, 2.6, 5.2, 6.6, 2.2, 2.8, 10, 4, 4.8, 2.2, 6, 1.8, 5, 1.6, 6, 1, 6.8, 4.6, 4, 3.4, 5.6, 5, 8.4, 5.2, 5.6, 2.8, 6.2, 6.4, 7, 6.2, 8, 2.4, 8.6, 10, 7, 2, 6.4, 2.2, 9.6, 7.8, 9, 2.4, 5.2, 4, 3.6];

b = [1.8, 9.4, 4.4, 2, 2.6, 1.6, 4.4, 5.6, 2.8, 4.8, 7.8, 5.8, 2.6, 6.4, 7.6, 1.8, 3, 1, 8.8, 5.8, 8.4, 6.6, 1.4, 1.2, 2.6, 5.2, 9.6, 3.4, 5.4, 8.8, 4, 7.4, 5.4, 2.8, 7.8, 2.2, 5.8, 6.6, 8.6, 4.2, 7, 1, 7.6, 7.2, 2.2, 2.2, 6.2, 8.2, 9.6, 7.4];

c = [1.0366, -0.7615, -1.0177, 0.8882, 2.0242, 2.3615, -2.7601, -0.794, 1.6202, -2.5808, 1.0549, -1.7683, 0.3774, 0.3206, 1.3473, 2.9079, 0.055, 1.9666, 1.1406, 0.031, 2.2495, 1.4925, 1.8587, 1.2104, 0.0642, -0.9913, -0.065, -1.0304, -1.077, 1.9454, -2.4558, 2.794, -0.5523, 1.4239, 2.9936, 1.4715, -1.6666, -0.0556, 0.6297, -0.9892, 0.8978, 2.6761, 1.3473, 0.6026, 1.6709, 0.7059, -0.9036, 2.35, -1.0023, 0.9007];

x = linspace(min(a)-1,max(a)+1,40);
y