Hi Folks,
I have data consisting of X,Y coordinates of a moving object, sampled
at an unfortunately low sampling rate. I'm therefore trying to
approximate location in the intervals between sampling points using
some combination of interpolation and smoothing or splining.
I have tried a bunch of methods (see below), but I'm having difficulty
meeting my two goals:
1) the interpolated trajectory should always go through the sampled
points (they are sampled without error, so I feel like I should hit
them)
2) the interpolated trajectory should look like a moving object with momentum
a. the trajectory should be somewhat smooth, what I would call
"sports car smooth"
b. velocity when entering a curve is taken into account - a
faster entry means a later, deeper apex
So far, I have tried:
-spline-
-rcspline-
-lowess-
-smooth-
I am wondering if anyone has any tips or package recommendations for
solving this fun problem.
Best,
Dan
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