visualize_DEM.m

% This is a routine to visualize elevation maps, cumulative depositional maps, and topographical x-sections generated by AquaTellUs
% written by Irina Overeem, updated July 2018


numcol=200;
numrow=200;

%read in the stack of topographical grids from the 'topo.dat' files

findex = dir('topo*.dat');
numfiles = length(findex)-1;
topodata = cell(1, numfiles);

for k = 1:numfiles
  myfilename = sprintf('topo%d.dat', k);
  topodata{k} = importdata(myfilename);
end


%read in the flowpath arrays from the 'flowpath.dat'files

flowpathdata = cell(1, numfiles);
for l  = 1:numfiles
  fpfilename = sprintf('flowpath%d.dat', l);
  flowpathdata{l} = importdata(fpfilename);
end

% read in the median grainsize data stack from the files
 grainsizedata = cell(1, numfiles);
% 
 for m = 1:numfiles
   fpfilename = sprintf('GSD%d.dat', m);
   grainsizedata{m} = importdata(fpfilename);
 end

% % % 
% % % %visualize the elevation grid and movie it through the simulation
% figure(1)
% for n=1:1:numfiles
% imagesc(topodata{:,n});
% %caxis([-5 10])
% colorbar()
% hold on
% t=flowpathdata{1,n};
% tt=t+1;
% plot(tt(:,2),tt(:,1),'k');
% title(['Topographical Changes due to Flood Deposition', ' ','Year # ',int2str(n)],'Color','b')
% K(n) = getframe;
% end
% movie2avi(K,'channelswitches.avi')
% 
% % 
% % %movie the sedimentation per timestep (difference grids)
figure(2)
for p=2:1:numfiles
imagesc(topodata{:,p}-topodata{:,1});
title(['Cumulative Flood Event Deposition', ' ','Year # ',int2str(p)],'Color','b')
colormap(jet)
caxis([-0.5 1.5]) 
colorbar()
L(p-1) = getframe;
end

movie2avi(L,'cumulativedeposition.avi')
% 
% 
% figure(3)
% for q=2:1:numfiles
% imagesc(grainsizedata{:,q});
% caxis([1 500])
% colorbar()
% title(['Grain size pattern due to Flood Deposition', ' ','Year # ',int2str(q)],'Color','b')
% M(q) = getframe;
% end
% movie2avi(M,'grainsizepatterns.avi')

% 
% %plot a series of cross-sections
figure(5)
xpos1=numcol*(1/5);
xpos2=numcol*(2/5);
xpos3=numcol*(3/5);
xpos4=numcol*(4/5);

xs=(topodata{:,numfiles});
subplot(4,1,1);
plot(xs(xpos1,:));
ylabel('h in m');
legend('X-section 36')
subplot(4,1,2);
plot(xs(xpos2,:));
ylabel('h in m');
legend('X-section 64')
subplot(4,1,3);
plot(xs(xpos3,:));
ylabel('h in m');
legend('X-section 108')
subplot(4,1,4);
plot(xs(xpos4,:));
ylabel('h in m');
legend('X-section 144')

% %plot a series of longitudinal-sections
figure(6)
xpos1=numrow*(1/2)+8;
xpos2=numrow*(1/2)+4;
xpos3=numrow*(1/2);
xpos4=numrow*(1/2)-16;

xs=(topodata{:,numfiles});
subplot(4,1,1);
plot(xs(:,xpos1));
ylabel('h in m');
legend('longsection 4km from main axis')
subplot(4,1,2);
plot(xs(:,xpos2));
ylabel('h in m');
legend('longsection 2km from main axis')
subplot(4,1,3);
plot(xs(:,xpos3));
ylabel('h in m');
legend('longsection at main axis')
subplot(4,1,4);
plot(xs(:,xpos4));
ylabel('h in m');
legend('longsection 8km from main axis')

figure(7)
xs=(topodata{:,numfiles});
long_centerline_position=numrow*(1/2);
plot(xs(:,long_centerline_position));
ylabel('h in m');
legend('longsection through main axis')

% calculate the slopes along the longitudinal profile
ytopo=xs(:,long_centerline_position);


for p=5:1:numrow-10
slope(p)=(ytopo(p+1)-ytopo(p))/500;
end