function smooth_compare_DH()
load DH_afterSmooth25.mat DH
DH_after = DH;

load DH_beforeSmooth25.mat DH
DH_before= DH;

nx=60;ny=1;nz=20;
i=1;j=1; epss=0.014;
% i=1;j=2; epss=0.20;
% epss=0.5;
Dij_after = zeros(nx,ny,nz);
Dij_before= zeros(nx,ny,nz);
for ix=1:nx
    for iy=1:ny
        for iz=1:nz
Dij_after(ix,iy,iz) =DH_after{ix,iy,iz}(i,j);
Dij_before(ix,iy,iz)=DH_before{ix,iy,iz}(i,j);
% Dij_after(ix,iy,iz) =trace(DH_after{ix,iy,iz});
% Dij_before(ix,iy,iz)=trace(DH_before{ix,iy,iz});
        end
    end
end

figure()
imagesc(squeeze(Dij_before(:,1,:)).')
axis equal; axis tight; axis off;colorbar;
set(gca,'YDir','normal')


figure()
error=abs(Dij_after-Dij_before)./Dij_before;
error=error.*(abs(Dij_before)>epss);
imagesc(squeeze(error(:,1,:)).')
axis equal; axis tight; axis off;colorbar;
set(gca,'YDir','normal')
mean(error,'all')
end