Module DBS2IN in IMSLMCompute a two-dimensional tensor-product spline interpolant, returning the tensor-product B-spline coefficients.
CALL DBS2IN (NXDATA, XDATA, NYDATA, YDATA, FDATA, LDF, KXORD, KYORD, XKNOT, YKNOT, BSCOEF)| E2a | Interpolation of gridded multivariate data |