Question
In Matlab is there any special function to draw arc with user defined radius, points and angle. If it is not there how is it possible to draw a curve in a figure using user defined radius,angles, points etc.
Expert Answer
Kshitij Singh
PhD Expert
Answered Aug 21, 2026
There are no such functions in core MATLAB, but they’re easy enough to write.
This code plots an arc of stars:
circr = @(radius,rad_ang) [radius*cos(rad_ang); radius*sin(rad_ang)]; % Circle Function For Angles In Radians circd = @(radius,deg_ang) [radius*cosd(deg_ang); radius*sind(deg_ang)]; % Circle Function For Angles In Degrees N = 25; % Number Of Points In Complete Circle r_angl = linspace(pi/4, 3*pi/4, N); % Angle Defining Arc Segment (radians) radius = 1.5; % Arc Radius xy_r = circr(radius,r_angl); % Matrix (2xN) Of (x,y) Coordinates figure(1) plot(xy_r(1,:), xy_r(2,:), 'bp') % Draw An Arc Of Blue Stars axis([-1.25*radius 1.25*radius 0 1.25*radius]) % Set Axis Limits axis equal % No Distortion With ‘axis equal’
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