NAME

       c_dsgrid2d - primary double precision C entry for 2D gridding

FUNCTION PROTOTYPE

       double *c_dsgrid2d(int, double [], double [], double [],
                         int, int, double [], double [], int *);

SYNOPSIS

       double *c_dsgrid2d(int n, double x[], double y[], double z[],
                          int nx, int ny, double xo[], double yo[], 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 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]),
                   for 0 <= m < n.

       nx          The number of X values in the output grid.

       ny          The number of Y 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.

       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_dsgrid2d 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

       double *out;

       and we set:

         out = c_dsgrid2d(n, x, y, z, nx, ny, xo, yo, ier);

       then  out[i*ny+j] is the interpolated function value at coordinate point (xo[i],yo[j]) for
       0 <= i < nx and 0 <= j < ny. The space for out is allocated internal to c_dsgrid2d and  is
       nx*ny doubles in size.

ACCESS

       To use c_dsgrid2d, load the NCAR Graphics library ngmath.

SEE ALSO

       dsgrid, dsgrid_params, c_dsseti, c_dsgeti, c_dssetrd, c_dsgetrd, c_dssetc, c_dsgetc.

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

COPYRIGHT

       Copyright (C) 2000
       University Corporation for Atmospheric Research

       The use of this Software is governed by a License Agreement.