sheet 5 not tested

sheet5/5/visualize_results.m

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+%% Visualize results
+%
+%   flatpak run org.octave.Octave <filename>
+%      or
+%   octave --no-window-system --no-gui  -qf <filename>
+%
+%      or
+%   matlab -nosplash <   <filename>
+
+clear all
+clc
+
+%%
+fname = 'uv.txt';
+
+[xc,ia,v] = ascii_read_meshvector(fname);
+
+h = trisurf(ia, xc(:,1), xc(:,2), v);
+
+waitfor(h)                     % wait for closing the figure