I have a function f(r), where r=sqrt(x^2+y^2). In my data r, is an array which takes values from [0,8], for example: f(r)=sin(r). I don't have data for an array of x or y seperately. The function is perfectly isotropic. How can I create a 3-dimensional plot, where the function f(x^2+y^2) is presented versus x and y in the correct range?
Further explanation:
The vector of the values of f(r) is given. It was calculated from some numerical simulation (I don't have its analytic form). I don't have the vectors for x and y. The function is isotropic, so one can imagine that I just draw the same curve f(r) in every direction. But the problem I encounter for example, is how to create the vector Theta, x and y, so that they will have the correct number of sites, like f(r), and that they will represent f(r) in the 3-dimensional plot.
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