Calculate the normal vector of a plane in 3D that contains three points.
Updated 1 Apr 2016

View License

VEC = PLANENORMVEC(PT1,PT2,PT3) calculats the normal vector of a plane that includes three points PT1, PT2, and PT3. When the plane is expressed as ax + by + cz = 1, VEC(1) = a, VEC(2) = b, VEC(3) = c. Points should be a 1 x 3 vector, specifying x, y and z values for each column.
p1 = [3,4,5];
p2 = [8,-4,0];
p3 = [0,0,1];
vec = planenormvec(p1,p2,p3);

Cite As

Yo Fukushima (2024). planenormvec (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R11.1
Compatible with any release
Platform Compatibility
Windows macOS Linux
Find more on Linear Algebra in Help Center and MATLAB Answers

Inspired: threepoints2planez

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
Version Published Release Notes

BSD License added.