How can i save a circle coordinates in a matrix?

Hi everybody!

i want to make a circle in matlab with the following conditions.

• the radius of the circle is 1 cm also i must use it in meter so 0,01
• The delta phi is 1 degress
• the center point of the circle is x = 0 y = 0 z =0

I need to calculate out the x coordinates of the circle, the y coordinates of the circle and z coorinates are constant = 0. All of these results

should be in a matrix where the first coloumn contains the x coordinates, the second contains the y coordinates and the third are zeros, because z = 0

The program should know that, when i give for the radius and

the delta phi other values, it will works always good.

Thank you for your help!

Peter

[Walter Roberson]

pol2cart

Answer 1

[KSSV]

R = 0.01;    % Radius 
C = [90. 0.] ; 
th = (0:1:360)' ;
x = C(1)+R*cosd(th) ;
y = C(2)+R*sind(th) ; 
z = zeros(size(th)) ;

P = [x y z] ;

plot3(x,y,z)

[Adam Peter]

Thank you guys! It works! :)

[Image Analyst]

You said "the center point of the circle is x = 0 y = 0 z =0" so use this C instead:

C = [0, 0];

Please "Accept this Answer" since you said it works.