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--- gibson:teaching:fall-2014:math445:lab6 [2014/11/17 13:11]
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 {{:gibson:teaching:fall-2012:math445:lab10-fig4.png?500|}}
+Attribution: based on Prof. Mark Lyon's "Advanced Graphics" lab for Math 445, which was adapted from an [[http://yapso.sourceforge.net/demo/demo.html | Octave demo]].
+===== Problem 4: surf 'n' subplot  =====
+Create a 2D mesh from −π to π with 100 points in both the x and y directions and
+then recreate Figure 5, using the functions ''z = cos(x/2) cos(y/2)'', ''z = sin(x) cos(y/2),''
+''z = cos(x/2) sin(y)'', and ''z = sin(x) sin(y)''.
+{{:gibson:teaching:fall-2012:math445:lab10-fig5.png?500|}}
+===== Problem 5: mystery plot =====
+Enter the following code into a script ﬁle, save the ﬁgure produced as a '.jpg' or '.png'
+image, and include it with your project. What does the image produce? What is the role of the 'C'
+variable?
+<code>
+[phi,theta] = meshgrid(linspace(0,2*pi,100));
+X=(cos(phi) + 3) .* cos(theta);
+Y=(cos(phi) + 3) .* sin(theta);
+Z=sin(phi);
+C=sin(3*theta);
+surf(X,Y,Z,C)
+shading interp
+</code>
+===== Bonus =====
+Draw a Klein bottle in Matlab. Feel free to search the web, but understand whatever you use.
+Attribution: This lab is adapted from Prof.Mark Lyon's Math 445 Advanced Graphics lab, which is adapted from Octave demos at [[http://yapso.sourceforge.net/demo/demo.html]].