How to plot circular arc passes through 3 points ?

Hello All,

I am trying to write a program which generates arc passes through 3 given points. To do that, I have written the code which finds the circle passes through 3 points, and calculated the angle of these points. I am making program plot between first and last points' angle values. However, linspace function creates a problem because it always takes the CCW. depending on middle point it can be CW. Is there any function or program which creates an arc given 3 points ? or is there any method like linspace which can wrap values around 2pi ?

Answer 1

[Atakan Zeybek]

I solved the problem, solution can be seen on here,

https://stackoverflow.com/questions/63025337/how-to-plot-arc-that-passes-through-3-points

Answer 2

[Bruno Luong]

Assuming you have angle vector in radian. Change

anglevectorCCW = linspace(angle1, angle2)

to

anglevectorCW = linspace(min(angle1,angle2),max(angle1,angle2)-2*pi);

for plot the other part of the circle.

[Atakan Zeybek]

points = [6 4;9 3;10 4];

it did not work for these points, unfortunately.

[Bruno Luong]

Show us your corresponding angle values, input arguments of LINSPACE and the command of plot the arc.

Don't care about the "points", which I have no clue why it's 3 x 1 array, doesn't make any sense since you seem to describe 3 points in the plane.