these are the error plots from the routine
red is the original spline error
yellow is the baseline (0 error)
green is the error after adjustment
test #1.... no alteration
mean error 0.010788
max error 0.030317
test # 2 .... 1 pass (8 seconds, 12 control points)
mean error 0.002992
max error 0.009169
std deviation 0.002728
test # 3 .... 2 pass (19 seconds, 29 control points)
mean error 0.000422
max error 0.001746
std deviation 0.000456
test # 4 .... 3 pass (36 seconds, 66 control points)
mean error 0.000110
max error 0.001676
std deviation 0.000246
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