Hi,
Well, if you use [tabread4~] or any of the many other Pd objects that use the same broken interpolation algorithm (copy/paste programming),
Broken? What's wrong in the tabread4~ interpolation? (note this is not a sarchastical question implying there's nothing wrong in it, it's a genuine question in order to learn what's wrong in it) Is it a bug?
Claude wrote:
If you use [tabread4] to interpolate graphical parameters for animations, the discontinuities in the derivatives are really obvious.
[....]
But IMHO if you're doing piecewise cubic interpolation, it's a bit of a nonsense to have a cubic that goes through all 4 points when it's only being used between the inner-most 2 points
Well using 4 points to interpolate the curve that goes between the two inner points should guarantee the absence of discontinuities in the first (and second?) derivative; that should be the purpose. Now if there actually are discontinuities then there must be some trivial error in the equation, no????
Or am I missing something???