Circumcircle of a triangle

Compute the circumcircle and plot it

Description

The function circumcircle takes input as the coordinates of the three vertices of a triangle and compute the circum center and circum radius by using the formula in terms of the length of sides and area of triangle and plot the circumcircle.

• MATLAB release: MATLAB 7.1.0 (R14SP3)

[John D'Errico]

Not bad. A couple of points. By forcing the user to always generate a figure plotting the circle, the author makes this code into more of a toy than a useful tool. At the very least, there should be a flag to allow the user to turn the plot on or off.

It would also be useful if this tool could accept a full triangulation, computing the circles (using vectorized computations) for each triangle, rather than only a single triangle.

Good help is supplied, but the H1 line is broken into two pieces, so lookfor won't see it all. The internal comments are useful. There is no error checking, so if you supply the wrong shape inputs you will get random results.

Finally, I'd suggest the help should include a definition of what is a circumcircle. Not all users will know.

[Kimberly]

It's unfortunate that it only accepts 2 dimensions (x, y). Three dimensional space (x, y, z) would be a great addition.