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function bipartiteMatchingDemoPlot(sources, detections, a)
hold on
p1 = size(sources,2);
p2 = size(detections,2);
for i=1:p1
h=text(sources(1,i), sources(2,i), sprintf('s%d', i));
set(h, 'color', 'r');
end
for i=1:p2
h=text(detections(1,i), detections(2,i), sprintf('d%d', i));
set(h, 'color', 'b');
end
if nargin < 3, return; end
for i=1:p1
j = a(i);
if j==0 % i not matched to anything
continue
end
line([sources(1,i) detections(1,j)], [sources(2,i) detections(2,j)])
end
axis_pct;
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