This module contains source codes for Csagrid examples.
The following list summarizes the examples:

- Example 1 -- a one-dimensional example varying the number of knots.
- Example 2 -- a one-dimensional example illustrating input data weighting.
- Example 3 -- a one-dimensional example illustrating extrapolation into data sparse regions.
- Example 4 -- a two-dimensional example illustrating taking partial derivatives.
- Example 5 -- a three-dimensional example (sphere).
- Example 6 -- a three-dimensional example (tube).
- Example 7 -- a two-dimensional example using
list output

The plotting subroutines used by the Fortran examples to plot surfaces and
isosurfaces are
TDEZ2D and
TDEZ3D
from the Tdpack package
of NCAR Graphics. TDEZ2D is a simplified
procedure for drawing a surface and TDEZ3D is a simplified procedure
for drawing an isosurface. The C examples use the C functions,
c_tdez2d.c and c_tdez3d.c from Tdpack - these are
equivalent to the Fortran procedures. The NCL examples use the
built-in functions
tdez2d and
tdez3d.

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.

If you have access to NCAR Graphics, you can create executables for
all of the Fortran and 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.
If you are using NCAR
Graphics and the C interface to Csagrid and
you are compiling using *ncargcc*, then
function prototypes for all
Csagrid C functions are contained in a C header file. This can be accessed
by inserting the line:

#include <ncarg/ngmath.h>

into your code.
If you are using NCAR Graphics, you can run all of the NCL examples
for Csagrid using the *ng4ex* utility. The NCL examples
utilize GSUN> functions.

## Example 1 -- a one-dimensional example varying the number of knots

## Example 2 -- a one-dimensional example illustrating input data weighting

## Example 3 -- a one-dimensional example illustrating extrapolation into data sparse regions

## Example 4 -- a two-dimensional example illustrating
taking partial derivatives

## Example 5 -- a three-dimensional example (sphere)

## Example 6 -- a three-dimensional example (tube)

## Example 7 -- a two-dimensional example using list output

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