| e01sac | nag_2d_scat_interpolant A function to generate a two-dimensional surface interpolating a set of data points, using either the method of Renka and Cline or the modified Shepard's method |
| e01tgc | nag_3d_shep_interp Interpolating functions, modified Shepard's method, three variables |
| e01thc | nag_3d_shep_eval Interpolated values, evaluate interpolant computed by e01tgc, function and first derivatives, three variables |