On 7/21/07, Alfonso Salazar <[EMAIL PROTECTED]> wrote:
I am looking for a function in order to calculate cubic splines.
Here's a function (C) which calculates the spline polynomials for a cubic spline for a one dimensional closed curve. D=: (1&|. + 4&* + _1&|.)@[EMAIL PROTECTED]@# %. 3 * 1&|. - _1&|. m=.".;._2]0 :0 1 0 0 0 0 1 0 0 _3 _1 3 _1 2 1 _2 1 ) C=: m +/ .* (],1&|.)@(,:D) If that is not what you are looking for, and if the spline routines that Patrick Harrington posted are not what you are looking for, could you be more specific? -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
