ncl_c_dsgrid3s man page

c_dsgrid3s — primary single precision C entry for 3D gridding

Function Prototype

float  *c_dsgrid3s(int, float [], float [], float [], float [],
          int, int, int, float [], float [], float [], int *);

Synopsis

float  *c_dsgrid3s(int n, float x[], float y[], float z[], 
          float u[], int nx, int ny, int nz, float xo[], 
          float yo[], float zo[], int *ier);

Description

n

The number of input data points.

x

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

y

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

z

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

u

An array of size n containing the functional values of the input  data points. That is, z[m] is the value of the input function at coordinate (x[m],y[m],z[m]), for 0 <= m < n.

nx

The number of X values in the output grid.

ny

The number of Y values in the output grid.

nz

The number of Z values in the output grid.

xo

An array of size nx containing the X coordinates of the  output data grid. The values in xo must be increasing, but need not be equally spaced.

yo

An array of size ny containing the Y  coordinates of the output data grid. The values in yo must be  increasing, but need not be equally spaced.

zo

An array of size nz containing the Z  coordinates of the output data grid. The values in zo must be  increasing, but need not be equally spaced.

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

c_dsgrid3s returns a pointer to a linear array of data that is  the interpolated grid stored in row-major order. That is, if out is declared as

float *out;

and we set:

  out = *c_dsgrid3s(n, x, y, z, u, nx, ny, nz, 
            xo, yo, zo, ier);

then out[nz*ny*i + nz*j + k] is the interpolated function value at  coordinate point (xo[i],yo[j],zo[k]) for 0 <= i < nx,  0 <= j < ny, and 0 <= k < nz. The space for out is  allocated internal to c_dsgrid3s and is nx*ny*nz floats in size.

Access

To use c_dsgrid3s, load the NCAR Graphics library ngmath.

See Also

dsgrid, dsgrid_params,  c_dsseti,  c_dsgeti,  c_dssetr,  c_dsgetr,  c_dssetc,  c_dsgetc.

Complete documentation for Dsgrid is available at URL
http://ngwww.ucar.edu/ngdoc/ng/ngmath/dsgrid/dshome.html

Info

September 1997-1998 UNIX NCAR GRAPHICS