GCVNSpline doesn't work with vector y(multiple observations)

[rainwoodman]

The fitting works, but the evaluation fails with a strange error from the fortran wrapper.

[charlesll]

Could it be due to the fact that the C array containing spline coefficient has not the same shape in GCVSPL and SPLDER as advised by the FORTRAN doc lines 102-110?

c C(NC,K) ( O ) Spline coefficients, to be used in conjunction
c with function SPLDER. NB: the dimensions of C
c in GCVSPL and in SPLDER are different! In SPLDER
c,
c only a single column of C(N,K) is needed, and th
ce
c proper column C(1,J), with J=1...K should be use
cd
c when calling SPLDER.