Smooth a grid horizontally using interp2

Question

K G 2016-10-24

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/308836-smooth-a-grid-horizontally-using-interp2

评论： K G 2016-10-25

采纳的回答： Guillaume

在 MATLAB Online 中打开

I have a grid - bRMS - of Sound Speed values. The x dimension is distance, sampled in km every 0.00625 km.

vbx=[0.00625:0.00625:35]';

The y dimension is depth (in time), sampled every 0.001 s.

vby=[0:0.001:0.5]';

I would like to smooth the grid in the horizontal direction only, apply a conversion, then smooth in the vertical direction.

My code to smooth the grid horizontally is:

vbx_smooth=[0.00625:0.00625*100:35]';
[Xq,Yq]=meshgrid(vbx_smooth,vby);
Vq=interp2(vX,vY,bRMS,Xq,Yq);

This is producing an error

Error using griddedInterpolant
The grid vectors do not define a grid of points that match the given values.
Error in interp2>makegriddedinterp (line 228)
    F = griddedInterpolant(varargin{:});
Error in interp2 (line 136)
        F = makegriddedinterp(X, Y, V, method,extrap);