Plot with 2 parameters

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Hakan Güngör
Hakan Güngör on 9 Jan 2021
Commented: Hakan Güngör on 12 Jan 2021
syms r teta x y
teta= -90: 0.1: 90;
r= 0.5:0.1:1.5;
x=sind(teta).*r;
y=cosd(teta).*r;
plot(x,y)
that my code, I want to see a plot like half disc with a hole but it doesnt work :(

Answers (1)

Alan Stevens
Alan Stevens on 9 Jan 2021
Do you mean something like this:
theta = -90:90;
ri = 0.5; ro = 1.5;
x = [ri*cosd(theta) ro*cosd(-theta) 0];
y = [ri*sind(theta) ro*sind(-theta) ri*sind(theta(1))];
plot(x,y), axis equal
  3 Comments
Alan Stevens
Alan Stevens on 12 Jan 2021
Yes, use a for loop. You haven't said if the values from 0.5 to 1.5 refer to ri or ro. Presumably you need to specify values for both.
Hakan Güngör
Hakan Güngör on 12 Jan 2021
thanks mate

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