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Hi Everyone,

I'm new to polar plotting and I'm struggling to sucesfully plot what I'm after.

I want to polar plot a random variable around an origin of my choice. I have tried to do this through the following code:

k = round(rand(1,50)*10)+10;

Th = linspace(0,2*pi,50);

Rho = k.*sin(Th);

figure

polar(Th,Rho)

However, this isn't quite working. As all the values are positive it's cramping the plot in the top 2 quadrants. Please see attached plot for what I mean. I have sketched the kind of plot I am after (apologies for how rough this sketch is) but any ideas would be realy appreciated.

Thanks everyone!

Star Strider
on 19 Jul 2019

Plotting the sine function in a polar plot will produce one circle in the upper half of the polar axes.

To get the sort of plot you want, do this:

figure

polar(Th,k)

infinity
on 19 Jul 2019

Hello,

How about if you change a bit like this

clear

close all

% k = round(rand(1,50)*10)+10;

k = round(rand(1,50));

Th = linspace(0,2*pi,50);

% Rho = k.*sin(Th);

Rho = k.*sin(Th)-10;

figure

polar(Th,Rho)

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