painting specific points in sunflower stracture

Hi!

I have this sunflower structure and in need to paint one point in red and the neighbors in another color.

phi = (sqrt(5)-1)/2;
n = 500;
rho = (5:n-1).^phi;
theta = (5:n-1)*2*pi*phi;


polar(theta, rho, '.');
title([num2str(n) ' Sunflower Seeds']);
set(gcf, 'color', 'w');

How I can do it?

[darova]

Did you try color property?

[Omri Ifrah]

I need to scan the plot and mark random point. this point will paint in red and the point`s neighbors will paint in another color. and I need to do it for each radius.

[darova]

What about bwalabel?

[Omri Ifrah]

what is it?

[Image Analyst]

I was wondering that myself. Maybe he meant randi() to get the random index from the list of points he already has in (theta, rho) list of coordinates. Like

randomIndex = randi(length(theta), 1);
randomTheta = theta(randomIndex);
randomRho = rho(randomIndex);

Answer 1

[Image Analyst]

Did you try plot(), something like

plot(x, y, 'r.', 'MarkerSize', 30);

[darova]

I agree, good idea

[Omri Ifrah]

Hi,

I need more information,if you can contact me privetly or explain here how it`s works