intxy

Finds the first point along line a where an intersection

Description

Returns the location of the first intersection of a and b. If the intersection occurs along a segment (as opposed to at a vertex), then the decimal value of ia (or ib) defines the distance between the intersection and preceeding vertex as a portion of the overall length of the segment containing the intersection. For example, an intersection occurring halfway between the 2nd and 3rd vertices of line "a" would return ia=2.5. Likewise, an intersection 1/4 the way between vertices 1 and 2 would return ia=1.25.

• MATLAB release: MATLAB 7.3 (R2006b)

[whit schofield]

Nice but how could it be modified to return all the points where a and b intersect?

[Antoni J. Canós]

What do you mean with "the first point"?.

Please, have a look on Curve Intersect 2 (File ID. 8908), Fast and Robust Curve Intersections (ID 11837).

What's new in this contribution?

[Wes]

I can't figure out why I am getting NAN and complex numbers returned from intxy. Any suggestions?