I think there is a mistake in verb cubicspline (spline addon) for intervals different than 1.0.
If you try an interval of 0.1: load 'math/misc/spline plot numeric' x=. 1.1 1.2 1.3 1.4 1.5 y=. 351.6 351.6 354.6 371.0 387.7 csp=. cubicspline x,:y plot csp interspline range 1.1 1.5 0.02 you see the problem. It works after removal of the square verb in line 16 of spline.ijs (verb cubicspline). line 16 old: w=. 3 * diff k % *: h line 16 new: w=. 3 * diff k % h Regards, Mario (j901beta-p j9.01.13 win64) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
