On 20 Jan 2004 02:28:34 GMT, (Mark Drela) wrote:

But in the case of the original FX67-150 coordinates,
this still produces overshoots, with a concavity below
the LE point (top looks better, but still wavy).
The real problem is that the necessary geometric
information is simply not present in the coarse
coordinates. An adequately-smooth interpolated shape
has to be literally "made up" in one way or another.

That's why I suggested pumping the co-ordinates through ConCord on the
grounds that its internal representation looks pretty good and I hoped
it would fix the interpolation. I just tried this trick and it doesn't
work. Apologies.

--
martin@ : Martin Gregorie
gregorie : Harlow, UK
demon :
co : Zappa fan & glider pilot
uk :