I'm working on a path following vehicle. I have a matrix with the coordinates of the path and I have the actual position of the car. And I want to know what is the next point of the path closest to the actual position. How do I do that?

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Flávio
Flávio 2012-12-25
Basically, I want to know what is the point of the path closer to the point of the actual position.
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Image Analyst
Image Analyst 2012-12-25
Wouldn't you just use the Pythagorean theorem to get the closest distance?
distances = sqrt(pathX - actualX).^2 + (pathY - actualY).^2);
[closestDistance, indexOfClosestPoint] = min(distances);
closestPathX = pathX(indexOfClosestPoint);
closestPathY = pathY(indexOfClosestPoint);

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