from 1D vector to mesh plot

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Andrea Somma
Andrea Somma 2022-11-3
评论： Andrea Somma 2022-11-5
If I have a 1D vector in space(radius) and concentration for example, is there a simple way to create a meshplot with a circular simmetry? as if the plot has been rotated around the (0,0) and the concentration is displayed with colors (as in surf)
like from the image on the left to the image on the right (sorry I am bad at drawing)

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Jan
Jan 2022-11-3
编辑：Jan 2022-11-3
Ran in:
% The grid:
x = linspace(-3, 3, 50);
y = linspace(-3, 3, 50);
R = sqrt(x.^2 + (y.').^2);
% The concentration:
Cx = linspace(0, 3, 100);
Cy = zeros(size(Cx));
Cy(1:50) = 3;
Cy(51:90) = linspace(3, 0, 40);
% The value:
z = interp1(Cx, Cy, R);
mesh(x, y, z)
imagesc(z)
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Jan
Jan 2022-11-5
interp1 and interp1q are slower than griddedInterpolant.
This is even faster: https://www.mathworks.com/matlabcentral/fileexchange/25463-scaletime

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