Page 74 - MATLAB an introduction with applications
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MATLAB Basics ——— 59
0.4
0.2
z 0
–0.2
–0.4
4
2 4
0 2
0
–2 –2
y –4 –4
x
Fig. E1.14 (c)
0.5
z 0
–0.5
5
5
0
0
y –5 –5 x
Fig. E1.14 (d)
(e) % Surface and Contour Plot
>> x=–4.0:0.25:4;
>> y=–4.0:0.25:4;
>> [x, y] =meshgrid(x, y);
>> z=2.0^(–1.5*sqrt(x^2+y^2))*cos(0.5*y)*sin(x);
>> surfc(x, y, z)
>> xlabel(‘x’);ylabel(‘y’)
>> zlabel(‘z’)
F:\Final Book\Sanjay\IIIrd Printout\Dt. 10-03-09
