intersection point between 2-d plot and a line

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Mike Lee
Mike Lee 2017-3-27
回答： Robert Alvarez 2017-3-27
Hi,
I have 2-d plot that is based on data (two vectors) and a horizontal line function (using fplot).
I am trying to find intersection point of outer most line of 2-d plot(blue) and red line, in other words I want to get the intersection point where red line hits the first and the last. Then I want to find difference between intersection points of x axes, that is x2 - x1. How should I proceed?
Thank you

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回答（1 个）

Robert Alvarez
Robert Alvarez 2017-3-27
Whoops, put my answer in the comment:
Try the PolylineIntersectSegment.m explained in this blog post:
blog post

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