How to numerically calculate second derivative given 3 3D points (x, y, z) ?
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I have a series of points representing connected lines in 3D (x, y, z) and I want to calculate number of inflection points.
This would mean calculating second derivatives and check when its sign changes. But I am not sure how to calculate second derivative in 3D. I know how to do in 2D (x ,y) which can be seen here.
Of course it won't be as straight forward as in 2D but any simple way to calculate it in order to get number of inflection points would be helpful.
derivatives 3d curves
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up vote
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I have a series of points representing connected lines in 3D (x, y, z) and I want to calculate number of inflection points.
This would mean calculating second derivatives and check when its sign changes. But I am not sure how to calculate second derivative in 3D. I know how to do in 2D (x ,y) which can be seen here.
Of course it won't be as straight forward as in 2D but any simple way to calculate it in order to get number of inflection points would be helpful.
derivatives 3d curves
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I have a series of points representing connected lines in 3D (x, y, z) and I want to calculate number of inflection points.
This would mean calculating second derivatives and check when its sign changes. But I am not sure how to calculate second derivative in 3D. I know how to do in 2D (x ,y) which can be seen here.
Of course it won't be as straight forward as in 2D but any simple way to calculate it in order to get number of inflection points would be helpful.
derivatives 3d curves
I have a series of points representing connected lines in 3D (x, y, z) and I want to calculate number of inflection points.
This would mean calculating second derivatives and check when its sign changes. But I am not sure how to calculate second derivative in 3D. I know how to do in 2D (x ,y) which can be seen here.
Of course it won't be as straight forward as in 2D but any simple way to calculate it in order to get number of inflection points would be helpful.
derivatives 3d curves
derivatives 3d curves
asked Sep 4 at 11:07
Rafa
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