NAME

       natgrid_params - This document briefly describes all the internal parameters of Natgrid.

DESCRIPTION

       Each entry below includes the name of a parameter, its Fortran type (use the obvious equivalents for C),
       its default value, and a short description of the parameter.

       ´ADF´   -   Integer   -    0
              Flags  if  the  data  file  of  algorithmic  information  for display with nnalg is produced - see
              parameter alg (0=no; 1=yes).

       ´ALG´   -   Character   -   ´nnalg.dat´
              File name for input to the algorithmic display tool nnalg (see parameter adf).

       ´ASC´   -   Integer   -   1
              Flags if automatic scaling is allowed (0 = no; 1 = yes).

       ´bI´   -   Real   -   1.5
              Tautness factor that increases the effect of the gradient estimates as bI increases.

       ´bJ´   -   Real   -   7.0
              Tautness factor that decreases the breadth of the region affected by the gradient estimates as  bJ
              increases.

       ´EXT´   -   Integer   -   1
              Flags whether extrapolation is allowed outside the convex hull (0=no; 1=yes).

       ´HOR´   -   Real   -   0.1*(extent of X output grid)
              Specifies the amount of horizontal overlap to be included outside of the current region when doing
              subblocking.

       ´IGR´   -   Integer   -   0
              Flag indicating if gradient estimates are to be computed (1=yes; 0=no).

       ´MAGX´   -   Real   -   1.0
              Scale factor for X coordinate input values.

       ´MAGY´   -   Real   -   1.0
              Scale factor for Y coordinate input values.

       ´MAGZ´   -   Real   -   1.0
              Scale factor for Z coordinate input values.

       ´MDM´   -   Integer   -   10
              Maximum number of informational messages about duplicate point culls.

       ´NON´   -   Integer   -   0
              Flags whether interpolated values are allowed to be negative (0=yes; 1=no).

       ´NUL´   -   Real   -   0.0
              The  value  to  be  used on output for points outside of the convex hull when extrapolation is not
              allowed.

       ´RAD´   -   Integer   -   0
              Flags if slopes and aspects are returned in radians or degrees (1=radians;0=degrees).

       ´SDI´   -   Integer   -   0
              Flags if slopes and aspects are computed (0=no; 1=yes).

       ´UPD´   -   Integer   -   1
              Flags if the output array goes from south to north or north to south (0=north to south; 1=south to
              north).

       ´VER´   -   Real   -   0.1*(extent of Y output grid)
              Specifies the amount of vertical overlap to be included outside of the current region  when  doing
              subblocking.

       ´XAS´   -   Real   -   1.0
              Contains  the scale value for automatic scaling of X input values in the most recent interpolation
              call.  For retrieval only.

       ´YAS´   -   Real   -   1.0
              Contains the scale value for automatic scaling of Y input values in the most recent  interpolation
              call.  For retrieval only.

       ´ZAS´   -   Real   -   1.0
              Contains  the scale value for automatic scaling of Z input values in the most recent interpolation
              call.  For retrieval only.

SEE ALSO

       c_natgridd,  c_natgrids,  c_nngetaspectd,  c_nngetaspects,  c_nngetc,  c_nngeti,   c_nngetr,   c_nngetrd,
       c_nngetsloped,  c_nngetslopes,  c_nnpntd,  c_nnpntend, c_nnpntendd, c_nnpntinitd, c_nnpntinits, c_nnpnts,
       c_nnsetc, c_nnseti, c_nnsetr,  c_nnsetrd,  natgrid,  natgrid_params,  natgridd,  natgrids,  nngetaspectd,
       nngetaspects,  nngetc,  nngeti,  nngetr,  nngetrd, nngetslopes, nngetslpped, nnpntd, nnpntend, nnpntendd,
       nnpntinitd, nnpntinits, nnpnts, nnsetc, nnseti, nnsetr, nnsetrd.

       Complete documentation for Natgrid is available at URL
       http://ngwww.ucar.edu/ngdoc/ng/ngmath/natgrid/nnhome.html

COPYRIGHT

       Copyright (C) 2000
       University Corporation for Atmospheric Research

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

UNIX                                             March 1997-1998                          natgrid_params(3NCARG)