What is the point at this!
December 5, 2012 2:23 PM Subscribe
Here’s a simple computational geometry problem. I am trying to figure out the value at an point of two line segments based off of the values at both of one of the segment’s endpoints.
The problem is that I don’t exactly know the best
way of going about finding the value at one of those points.
Here is a reference figure
(X_C, YC) = F_C
(X_D, YD) = F_D
How can I calculate the value of F_E, where F_E = (X_E, Y_E), where E is the point on the segment CD, where CD intersects with the line AB?
(Extraneous details inside)
posted by oceanjesse to science & nature (10 answers total) 1 user marked this as a favorite
For those who care for some context, I have a hurricane track that is split into segments. One of these segments overlaps a line that is used for extracting hurricane characteristics for a given storm to give to an storm forecasting interpolator. Since I only have exact values of some of those characteristics at either side of the intersecting segment, I need to find an estimate for the value at the intersection point based off of the distance between the points at either side of the intersecting segment.
If you could walk me through your steps, that would be fantastic. I never took geometry in high school. :)