The angle and radius above the complex plane.

I would like to mark the outside by marking the angle and radius as a single point on the complex plane consisting of the real axis and the imaginary axis.

I defined the angle and radius, but I can't see the picture. What should I do?

The angles are 10 degrees apart, and the radius taken by them is different.

[Jan]

I do not understand the question. You want to marke the outside of what? What does "marking the angle and radius as a single point" mean? You can't see of the picture of what?

[rimi]

I'm sorry for my poor English. Thank you for leaving comments.

I want to show the angle and radius on the complex plane.

For example, I would like to draw a number such as 1.5cm in radius at 10 degrees, 1.3cm in radius at 20 degrees, and 1.0 in radius at 30 degrees on a complex plane.

Answer 1

[Simon Chan]

Something like this?

rho = [1.5 1.3 1.0];
theta = [10 20 30];
Z = rho.*exp(deg2rad(theta).*1i);
polarplot(Z,'*')

[rimi]

Yes! That's what I wanted. I think I typed the wrong code in the part that defines Z. Thank you so much for answering. Happy New Year!

Answer 2

[Voss]

Like this?

theta = 0:10:360;
r = linspace(1,2,numel(theta));
x = r.*cosd(theta);
y = r.*sind(theta);
figure()
plot(x,y)

Or perhaps this?

figure()
plot(x,y,'o')

[rimi]

Thank you for your answer. But I'm curious about how to place the angle and radius on the complex plane.

[Walter Roberson]

theta = 0:10:360;
r = linspace(1,2,numel(theta));
polarplot( deg2rad(theta), r)