Hi,
I don't understand how contourplot chooses it's view range. I would like a contour plot to go from r=0..10 and display axes from [-10..10, -10..10].

plots:-contourplot(r*sin(phi), r = 0 .. 10, phi = 0 .. Pi, coords = spherical, grid = [80, 80]);

doesn't produce a plot with range [-10..10]. Adding view doesnt compute anything differeently, just makes the axes bigger.plots:-

contourplot(r*sin(phi), r = 0 .. 10, phi = 0 .. Pi, coords = spherical, grid = [80, 80], view=[-10..10,-10..10]);

I want more contour lines near the endpoints of the range. why is it focused in the middle?

any help is appreciated, 

Thanks!

Hi All,

I have a fucntion f(x,y,z) = exp(-x^2 -y^2 - z^4) and would like to plot the probabity density in real space. One method would be to randomly sample points in a grid based on f(x,y,z). The function f(x,y,z) is clearly peaked around x=y=z=0, so you would expect many points to lie around there. So the plot would look like a clump near (0,0,0) which gets less dense away from (0,0,0).

In the worksheet below, I sampled points from the Uniform distribution to file in the 3d-plot. I would like these points to be sampled from f instead, but am not sure how to do this.

Any help is appreciated,

Download Sample_Test.m