from 1D vector to mesh plot

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Andrea Somma
Andrea Somma el 3 de Nov. de 2022
Comentada: Andrea Somma el 5 de Nov. de 2022
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)

Respuesta aceptada

Jan
Jan el 3 de Nov. de 2022
Editada: Jan el 3 de Nov. de 2022
% 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)
  4 comentarios
Jan
Jan el 5 de Nov. de 2022
interp1 and interp1q are slower than griddedInterpolant.
Andrea Somma
Andrea Somma el 5 de Nov. de 2022
Thank you!

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