GRASS GIS 7 Programmer's Manual  7.5.svn(2018)-r72990
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func2d.c File Reference
#include <stdio.h>
#include <math.h>
#include <grass/gis.h>
#include <grass/interpf.h>
Include dependency graph for func2d.c:

Go to the source code of this file.

Functions

double IL_crst (double r, double fi)
 
int IL_crstg (double r, double fi, double *gd1, double *gd2)
 

Detailed Description

Author
Lubos Mitas (original program and various modifications)
H. Mitasova, I. Kosinovsky, D. Gerdes, D. McCauley (GRASS4.1 version of the program and GRASS4.2 modifications)
L. Mitas , H. Mitasova , I. Kosinovsky, D.Gerdes D. McCauley (1993, 1995)
modified by McCauley in August 1995
modified by Mitasova in August 1995, Nov. 1996

Definition in file func2d.c.

Function Documentation

double IL_crst ( double  r,
double  fi 
)

Radial basis function

Radial basis function - completely regularized spline with tension (d=2)

Parameters
rdistance squared
fitension

Definition at line 48 of file func2d.c.

References b, and x.

int IL_crstg ( double  r,
double  fi,
double *  gd1,
double *  gd2 
)

Function for calculating derivatives (d=2)

Derivatives of radial basis function - regularized spline with tension(d=2)

Parameters
rdistance squared
fitension
gd1G1(r)
gd2G2(r)

Definition at line 106 of file func2d.c.

References r, and x.