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x=[10 20 30 40];
y=[5 15 25 35];
z=[10 20 30 40];
v=[1000 800 2000 1500];
xi = [1 6 15 0];
yi = [19 40 33 49];
zi = [10 1 22 13];
Fi=interp3(x,y,z,v,xi,yi,zi,'linear',0)
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The grid vectors do not define a grid of points that match the given values.

Error in interp3 (line 130)
        F = griddedInterpolant({X, Y, Z}, V, method,extrap);
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= flow(10);
figure
slice(X,Y,Z,V,,2,0);
shading flat
= meshgrid(.1:.25:10,-3:.25:3,-3:.25:3);
Vq = interp3(X,Y,Z,V,Xq,Yq,Zq);
figure
slice ...

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[X,Y,Z,V] = flow(10);
figure
slice(X,Y,Z,V,[6 9],2,0);
shading flat
[Xq,Yq,Zq] = meshgrid(.1:.25:10,-3:.25:3,-3:.25:3);
Vq = interp3(X,Y,Z,V,Xq,Yq,Zq);
figure
slice(Xq,Yq,Zq,Vq,[6 9],2,0);
shading flat

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