MATLAB: GriddedInterpolant not a built-In Functions on a GPU

gpugriddedinterpolant

To make my code faster I have implemented "griddedInterpolant " instead of "interp1". Now I have a GPU but "griddedInterpolant" does not support gpu arrays, whereas "interp1" does. If this is the case I have to rewrite my code, using interp1. Is there a solution?

Best Answer

I'm not sure what you're asking, but if you're asking "am I right that I have to rewrite my code?" then yes, you are right.

Related Solutions

MATLAB: Parallel looped interp1 on GPU

The best way to parallelize multiple 1D interpolations is to use 2D interpolation, and just set the Y interp point to (1:M)', i.e:

Vqs = interp2(x, Data, Xq+x, (1:100)', 'linear', 0);

MATLAB: Linear Extrapolation with interp2

The only remedy I can think of is to pre-pad the edges of the data V with linearly extrapolated values at distant X, Y. That way, you aren't doing any extrapolation anymore. All of your query points xq,yq will fall within the boundaries of the padded data, assuming you make the padded, X,Y distant enough to enclose them.

[V,x]=linearpad(V,x);
[V,x]=linearpad(fliplr(V),flip(x)); V=fliplr(V);
V=V.';
[V,y]=linearpad(V,y); 
[V,y]=linearpad(fliplr(V),flip(y)); V=fliplr(V);
V=V.';
Vq=interp2(x,y,V,xq,yq,'linear');
function [D,z]=linearpad(D0,z0)
  factor=1e6;
  
  dz=z0(end)-z0(end-1);
  dD=D(:,end)-D(:,end-1);
  
  z=z0;
  z(end+1)=z(end)+factor*dz;
  
  D=D0;
  D(:,end+1)=D(:,end) + factor*dD;
end

Best Answer

Related Solutions

MATLAB: Parallel looped interp1 on GPU

MATLAB: Linear Extrapolation with interp2

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