ncl_c_dspnt3d - Man Page

interpolate double precision 3D data at specified points

Function Prototype

```void c_dspnt3d(int, double [], double [], double [], double[]
int, double [], double [], double [], double *, int *);```

Synopsis

```void c_dspnt3d(int n, double xi[], double yi[], double zi[], double ui[],
int m, double xo[], double yo[], double zo[], double *uo,
int *ier)```

Description

n

The number of input data points.

xi

An array containing the X coordinates of the input data points.

yi

An array containing the Y coordinates of the input data points.

zi

An array containing the Z coordinates of the input data points.

ui

An array containing the functional values of the input data  points. That is, ui[l] is the value of the input function at  coordinate (xi[l],yi[l],zi[l]), for 0 <= l < n .

m

The number of output data points (this may be "1").

xo

An array of dimension m containing the X coordinates of the  output data. The values in xo may be in any order.

yo

An array of dimension m containing the Y coordinates of the  output data. The values in xo may be in any order.

zo

An array of dimension m containing the Z coordinates of the  output data. The values in xo may be in any order.

uo

A pointer to a double. Space for m doubles is allocated for uo by  dspnt3d. zo[i] is the interpolated value at point  (xo[i],yo[i],zo[i]) for 0 <= i < n .

ier

An error return value. If *ier is returned as 0, then no errors  were detected. If *ier is non-zero, then refer to the man page for dsgrid_errors.

Usage

This function is called to interpolate double precision 3D  data at a specified point or points.

Access

To use c_dspnt3d, load the NCAR Graphics library ngmath.