Ellipse with a, b and angle between semi major axis and x-axis variable

Hi!

I want to plot an ellipse with origin at (0,0), semi major axis and semi minor axis needs to be a and b (length is a variable, and one can define it by writing a= for example 5 and b=10), and the angle between semi major (a) axis and x-axis is also a variable that I can define (for example 30 degrees)

Can someone please help me?

Answer 1

[Matt J]

Very straightforward if you download this,

https://www.mathworks.com/matlabcentral/fileexchange/87584-object-oriented-tools-for-fitting-conics-and-quadrics

plot( ellipticalFit.groundtruth([],[xcenter,ycenter],[a,b],angle)  );  

[Matt J]

You may have to adjust the axes to get a good view of the ellipse, e.g.,

[a,b,angle,xcenter,ycenter]=deal(10,5,30,0,0)

plot( ellipticalFit.groundtruth([],[xcenter,ycenter],[a,b],angle)  );  

axis(a*[-1,1,-1,1])