how will be interpolate 3D data

i have 3d data for resolution 2.0*2.5 but i want to interpolate this data set on .25*.25 resolution.

for this i already written this code. please tell this code is write or wrong for this process.

x = 68.7500; y = 7;

 for i = 1:120

     x_new(i,1) = x;

     x = x + 0.25;

 end

 for j = 1:128;

     y_new(j,1) = y;

     y = y + 0.25;

 end

 [x,y] = meshgrid(Y1,X1);

 [x1,y1]=meshgrid(y_new,x_new);

 method='linear';

for i=1:12810;

interpolate_data(: , : , i) = interp2(x,y,model_data(: , : , i),x1,y1,method);

end