zigzag(p,orders)

function zigzag(p,orders)
% Plot entries.

isLeader = [p.isLeader];
mi = min([p(isLeader).rawScore]);
ma = max([p(isLeader).rawScore]);
y = normalize([p.rawScore],orders,mi,ma);
x = [p.cpu_time];

w = warning('off','MATLAB:Axes:NegativeDataInLogAxis');
plot(x,y,'Marker','x','MarkerSize',4,'LineStyle','none');
set(gca,'YScale','log')
set(gca,'xlim',[0 max(x(isLeader))])
set(gca,'ylim',[.9 10^orders*1.1])
warning(w)

% Add contour lines.
hold on
addContourLines(orders,mi,ma);

% Add leader path.
line(x(isLeader),y(isLeader),'Color','red','marker','.')
line(x(1),y(1),'Marker','o','Color','red')
text(x(1),y(1),'Sample  ','HorizontalAlignment','right','Rotation',-45)
lastLeader = find(isLeader,1,'last' );
line(x(lastLeader),y(lastLeader),'Marker','o','Color','red')
text(x(lastLeader),y(lastLeader),'Leader  ','HorizontalAlignment','right','Rotation',-45)

% Add labels.
ylabel('results (normalized log scale)')
xlabel('cpu time (seconds)')
title('Results vs. Time Tradeoff')

% for i = 1:length(p)
%     text(x(i),y(i),p(i).author,'horizontalalign','right')
% end