MATLAB: Filled 2D contour plot

contourf

I want to plot filled 2D contour plots using contourf function. my data is in arranged as x y u v (tab limited n x 4 cells). how do I arrange a data to use function contourf?

Best Answer

Read your data and store into x, y, u, v .
uF = scatteredInterpolant(x, y, u);
vF = scatteredInterpolant(x, y, v);
[X, Y] = ndgrid( linspace(min(x), max(x)), linspace(min(y), max(y)));
U = uF(X, Y);
V = vF(X, Y);
subplot(1,2,1);
contourf(X, Y, U);
title('u')
subplot(1,2,2)
contourf(X, U, V);
title('v')
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