I am trying to plot the surface of a sphere but keep running into trouble in the z variable of my code. I have tried to resize the ra variable to the same size as y and x by multiplying it by a ones vector before sending it into z. I have tried carrying out the operations in z with element wise power . and without. I am actually pretty disappointed in myself that I can not seem to figure out an easy problem such as this. I have it sized right now but z keeps getting imaginary numbers which the system will not plot. The length of ra and theta were predetermined to be 10 and 22. Here is what I have so far. Thanks in advance for any help provided.
theta=linspace(0,2*pi,22)ra=linspace(0,1,10) x=(ra'*cos(theta))y=(ra'*sin(theta))r1=ones(22,1)*rar2=r1'z=abs(sqrt(r2.^2-x.^2-y.^2))surf(x,y,z)
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