Ex8 and minor improvements

sheet3/8/visualize_results.m

@@ -0,0 +1,20 @@
+%% 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