I am measuring a feature that is somewhat round but has lot of jagged edges. I want to use all of the areas to calculate the area. I am measuring this using hundreds of points. Anyone have any ideas ? I have searched for answers but can't seem to come up with any.
VinniUSMC at the rescue !
ASSIGN/SURFACE=SUM(SQRT(DOT(V5,V5))*SQRT(DOT(V6,V6))*SIN( DEG2RAD(ANGLEBETWEEN(V5,V6))))/2 !!!!!!!
V4 is the centroid of the scan, V5 and V6 are 2 arrays of vectors between hits and the centroid.
SQRT(DOT(V5,V5)) is an array of length of vectors, same for V6.
The norm of a cross product is also the area of the parallelogram formed by both vectors, and its (length of V5)*(length of V6)*(sin of anglre between V5 and V6) (math definition)
Thanks a lot Vinni !!!!!
(CTRL + C ; CTRL + V is sometimes too easy )
Ahh, you're calculating the sums of the areas of a series of parallelograms and then dividing that sum by 2 to turn the "sum-parallelogram" into "area of a triangle", which should be nearly equivalent to the area of the shape, regardless of the shape. Interesting, out-of-the-box thought process. Super@JEFMAN to the rescue.
Ahh, you're calculating the sums of the areas of a series of parallelograms and then dividing that sum by 2 to turn the "sum-parallelogram" into "area of a triangle", which should be nearly equivalent to the area of the shape, regardless of the shape. Interesting, out-of-the-box thought process. Super@JEFMAN to the rescue.
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