I somehow doubt this is actually what you want, but I'll oblige.
% given
theta = [80.86 81.36 81.82 82.38 82.98 83.64 84.28 85.12]
Intensity = [40.62 34.62 32.62 38.62 34.62 31.62 36.62 31.62]
% create lines
npoints = 100;
point_incident = linspace(0,1,npoints);
th_scaled = theta.' .* point_incident;
% create contour data from lines
x = repmat(point_incident,[numel(theta) 1]);
y = th_scaled;
z = repmat(Intensity.',[1 npoints]);
% plot contour
[~,hc] = contourf(x,y,z);
hc.LineStyle = 'none';
colormap(parula)
% plot lines if you want to obscure everything
hold on
plot(point_incident,th_scaled,'w');
% set the axes background to a solid color
set(gca,'color','b')
This looks like a good way to make a graph that's not really readable. If you want to show the intensity profile vs theta at one point, that would at least be readable. The profile is simply scaled at all other points, so you can express it in relative terms.
figure
plot(theta,Intensity)
xlabel('Theta / Point')
ylabel('Intensity')
grid on
That said, I have no idea what this actually describes.
