Added function to compute coordinates with respect to a scattered grid

gridCoords.m

+function [Xq,Yq,X,Y,varargout] = gridCoords(X,Y,Xq,Yq,varargin)
+%GRIDCOORDS Summary of this function goes here
+%   Detailed explanation goes here
+
+sz = size(Xq);
+
+[t,I] = utils.triangulation(X,Y,varargin{:});
+[ind,b] = t.pointLocation(Xq(:),Yq(:));
+
+ind = reshape(ind,sz);
+u = reshape(b(:,2),sz);
+v = reshape(b(:,3),sz);
+
+nanind = isnan(ind);
+ind(nanind) = 1;
+ind = I(ind);
+ut = ~mod(ind,2);
+ind(nanind) = nan;
+
+[x,y] = ind2sub(size(X)-1,ceil(ind/2));
+
+u(ut) = 1-u(ut);
+v(ut) = 1-v(ut);
+
+Xq = x+u;
+Yq = y+v;
+
+[X,Y] = ndgrid(1:size(X,1),1:size(X,2));
+
+if nargout>0; varargout{1} = u;   end
+if nargout>1; varargout{2} = v;   end
+if nargout>2; varargout{3} = x;   end
+if nargout>3; varargout{4} = y;   end
+if nargout>4; varargout{5} = ind; end
+if nargout>5; varargout{6} = t;   end
+if nargout>6; varargout{7} = I;   end
+
+end
\ No newline at end of file