Fitgrid Examples

Overview

This module contains source codes for Fitgrid examples.

The following list summarizes the examples:

Example 1 -- interpolated function, derivative and integral
Example 2 -- interpolated periodic function and integral
Example 3 -- interpolated smoothing functions
Example 4 -- interpolated parametric curves and derivatives
Example 5 -- interpolated closed parametric curves and derivatives
Example 6 -- interpolated surface
Example 7 -- smoothing spline in the plane

All of the example codes isolate the drawing of graphics into single calls to procedures for drawing plots for functions or surfaces. If you are not using NCAR Graphics and want to draw the plots, you will have to substitute appropriate calls from the graphics package you are using for the plotting procedures in the examples.

Of course you will need to be using NCAR Graphics software if you are using NCL.

Creating your own executable

If you have access to NCAR Graphics software, you can create executables for all of the Fortran or C examples in one of two ways. The easiest is to use the ncargex utility which is documented with a man page. The other way is to use either ncargf77 (for Fortran) or ncargcc (for C) to compile and execute the source codes.

Use ng4ex to generate the NCL examples.

If you are using NCAR Graphics and the C interface to Fitgrid and you are compiling using ncargcc, then function prototypes for all Fitgrid C functions are contained in a C header file. This can be accessed by inserting the line:

#include <ncarg/ngmath.h>

into your code.

Example 1 -- interpolated function, derivative and integral

Example 2 -- interpolated periodic function and derivative

Example 3 -- interpolated smoothing functions

Example 4 -- interpolated parametric curves and derivatives

Example 5 -- interpolated closed parametric curves and derivatives

Example 6 -- interpolated surface

Example 7 -- smoothing spline in the plane