Mark Multiple minimum and maximum value in polarplot

Hi, I have created the code to plot a data in polar coordinates as such:

theta=deg2rad(0:30:330);
r=[2.14 2.29 2.14 2.00 2.14 2.29 2.14 2.00 2.00 2.57 2.14 2.00];
polarplot(theta([1:end 1]),r([1:end 1]))
ax=gca
ax.ThetaZeroLocation='right'
ax.ThetaDir='counterclockwise'
title('RSR Value of Maximum Water Depth')

Now i want to mark all 3 minimum value of r (2.00) with a red circle, and also the maximum value with a green star. How can i do it? Thanks

Answer 1

[KSSV]

theta=deg2rad(0:30:330);
r=[2.14 2.29 2.14 2.00 2.14 2.29 2.14 2.00 2.00 2.57 2.14 2.00];
polarplot(theta([1:end 1]),r([1:end 1])) ;
[val0,idx0] = min(r) ; 
[val1,idx1] = max(r) ; 
hold on
polarplot(theta(idx0),val0,'*r') ;
polarplot(theta(idx1),val1,'*k') ;
ax=gca ;
ax.ThetaZeroLocation='right' ;
ax.ThetaDir='counterclockwise' ;
title('RSR Value of Maximum Water Depth')

[Arief Yoga Randytama]

Thanks! this works just fine, but i noticed that val0 and idx0 only reads one minimum value of r. Meanwhile, what i intended is mark all the minimum r value, which belongs to 90, 210, and 240 degree. Can it be done? Thanks again.