File Exchange

image thumbnail

Distance from points to an ellipse

version (2.16 KB) by Matthew Arthington
This function can calculate the geometric distance from one or more points to an ellipse in 2D.

1 Download

Updated 11 Jan 2010

View License

This function uses a dumb search to find the minimum distance between a point (or many points) and an ellipse. It has controllable accuracy which may be reduced for faster computation.

*Update 12 Jan 2010: Rody Oldenhuis has submitted a version of this file (possibly only for versions >=Matlab 2009a) that works for general 3D ellipses and should be more efficient than this one. Please see acknowledgements below.

*Update 08 Jan 2010: fixed a bug in original file

Cite As

Matthew Arthington (2020). Distance from points to an ellipse (, MATLAB Central File Exchange. Retrieved .

Comments and Ratings (3)

It finds the distance from points to an ellipse contour.

niki n

hi does this code find the min dis from point to the ellipse center or contour ?Any help will be greatly appreciated.thanks

While reading your post I was reminded of a long and tedious hunt I recently did for an efficient algorithm to find the distance between two confocal ellipses. One of the things I came across was exactly this problem (point - ellipse), and I remembered I still had the code for it somewhere.

So, I brushed it a bit, and I've just posted it (I made an acknowledgement to you as well). I hope my code can help you out.


Added a link to point to a file that has been uploaded in response to my original description, which said that there exists a more efficient method than this, but it has not been implemented yet.

Fixed a bug in original file.

MATLAB Release Compatibility
Created with R2008b
Compatible with any release
Platform Compatibility
Windows macOS Linux