The Position vs Position Analysis allows you to create X/Y graphs (X vs Y, Y vs Z or X vs Z) based on the movement of the points.

Position Analysis Options
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Calculate Relative
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This will subtract the motion of the selected point, i.e. translate the motion to selected point.
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Normalize Graph
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This will calculate the average of the specified number of frames starting with frame 1 and then subtract this from every frame. This will result in the change of motion instead of absolute motion.
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