You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: d_obc_roms2roms.m
    path of file: ./repos/tracacode/1911-COAWST/script/mfiles/rutgers/boundary
    
    the code of the file until where you have to start completion: %
%  D_OBC_ROMS2ROMS:  Driver script to create a ROMS boundary conditions
%
%  This a user modifiable script that can be used to prepare ROMS open
%  boundary conditions NetCDF file from another ROMS application. It
%  sets-up all the necessary parameters and variables. USERS can use
%  this as a prototype for their application.
%

% svn $Id: d_obc_roms2roms.m 938 2019-01-28 06:35:10Z arango $
%=========================================================================%
%  Copyright (c) 2002-2019 The ROMS/TOMS Group                            %
%    Licensed under a MIT/X style license                                 %
%    See License_ROMS.txt                           Hernan G. Arango      %
%=========================================================================%

%==========================================================================
% This script creates boundary conditions from ROMS NWA dataset.
%==========================================================================

% Set file names (Input data can be in an OpenDAP server).

NWAdata = 'NWA_avg.nc';
NWAgrid = 'NWA_grd.nc';

GRDname = 'gom_grid_a.nc';
BRYname = 'gom_bry_a.nc';

StrDay = datenum('01-Jan-2000');        % starting day to process
EndDay = datenum('31-Dec-2000');        % ending   day to process

CREATE = true;                          % logical switch to create NetCDF
WRITE  = true;                          % logical switch to write out data
report = false;                         % report vertical grid information

%  Set logical switch to compute time dependent vertical thichnesses (Hz)
%  when computing vertically integrated 2D momentum (ubar,vbar).

TimeDependent = true;

%  Initialize unlimited dimension record counter. Notice that if we want
%  to restart the computations, we can set CREATE = false and get the
% record of the last boundary conditions processed for appending.

if (CREATE)
  BryRec = 0;
else
  BryRec = length(nc_read(BRYname,'bry_time'));
end

%--------------------------------------------------------------------------
%  Set application parameters in structure array, S.
%--------------------------------------------------------------------------

[Lr,Mr] = size(nc_read(GRDname,'h'));

Lu = Lr-1;
Lv = Lr;
Mu = Mr;
Mv = Mr-1;

S.ncname      = BRYname;    % output NetCDF file

S.sp
    
function

S.theta_s     = 7.0;        % S-coordinate surface control parameter
S.theta_b     = 2.0;        % S-coordinate bottom control parameter
S.Tcline      = 250.0;      % S-coordinate surface/bottom stretching width
S.hc          = S.Tcline;   % S-coordinate stretching width

%  Set switches for boundary segments to process.

OBC.west  = true;           % process western  boundary segment
OBC.east  = true;           % process eastern  boundary segment
OBC.south = true;           % process southern boundary segment
OBC.north = false;          % process northern boundary segment

S.boundary(1) = OBC.west;
S.boundary(2) = OBC.east;
S.boundary(3) = OBC.south;
S.boundary(4) = OBC.north;

%--------------------------------------------------------------------------
%  Set variables to process.
%--------------------------------------------------------------------------

%  Grid variables.

VarGrd = {'spherical',                                                ...
          'Vtransform', 'Vstretching',                                ...
          'theta_s', 'theta_b', 'Tcline', 'hc',                       ...
          's_rho', 'Cs_r', 's_w', 'Cs_w'};

if (S.spherical),
  if (OBC.west),
    VarGrd = [VarGrd, 'lon_rho_west',  'lat_rho_west',                ...
                      'lon_u_west',    'lat_u_west',                  ...
                      'lon_v_west',    'lat_v_west'];
  end
  if (OBC.east),
    VarGrd = [VarGrd, 'lon_rho_east',  'lat_rho_east',                ...
                      'lon_u_east',    'lat_u_east',                  ...
                      'lon_v_east',    'lat_v_east'];
  end
  if (OBC.south),
    VarGrd = [VarGrd, 'lon_rho_south', 'lat_rho_south',               ...
                      'lon_u_south',   'lat_u_south',                 ...
                      'lon_v_south',   'lat_v_south'];
  end
  if (OBC.north),
    VarGrd = [VarGrd, 'lon_rho_north', 'lat_rho_north',               ...
                      'lon_u_north',   'lat_u_north',                 ...
                      'lon_v_north',   'lat_v_north'];
  end
else
  if (OBC.west),
    VarGrd = [VarGrd, 'x_rho_west',  'y_rho_west',                    ...
                      'x_u_west',    'y_u_west',                      ...
                      'x_v_west',    'y_v_west'];
  end
  if (OBC.east),
    VarGrd = [VarGrd, 'x_rho_east',  'y_rho_east',                    ...
                      'x_u_east',    'y_u_east',                      ...
                      'x_v_east',    'y_v_east'];
  end
  if (OBC.south),
    VarGrd = [VarGrd, 'x_rho_south', 'y_rho_south',                   ...
                      'x_u_south',   'y_u_south',                     ...
                      'x_v_south',   'y_v_south'];
  end
  if (OBC.north),
    VarGrd = [VarGrd, 'x_rho_north', 'y_rho_north',                   ...
                      'x_u_north',   'y_u_north',                     ...
                      'x_v_north',   'y_v_north'];
  end
end

%  ROMS state variables to process.  In 3D applications, the 2D momentum
%  components (ubar,vbar) are compouted by vertically integrating
%  3D momentum component. Therefore, interpolation of (ubar,vbar) is
%  not carried out for efficiency.

VarBry  = {'zeta', 'u', 'v', 'temp', 'salt'};
VarList = [VarBry, 'ubar', 'vbar'];

%  Set intepolation parameters.

method = 'linear';             % linear interpolation
offset = 10;                   % number of extra points for sampling
RemoveNaN = true;              % remove NaN with nearest-neighbor
Rvector = true;                % interpolate vectors to RHO-points

%--------------------------------------------------------------------------
%  Get parent and target grids structures. The depths are for an
%  unperturbed state (zeta = 0).
%--------------------------------------------------------------------------

%  Get Parent grid structure, P.

P = get_roms_grid(NWAgrid, NWAdata);

%  Set surface-depths to zero to bound surface interpolation. This is
%  specific for this application.

N = P.N;

P.z_r(:,:,N) = 0;
P.z_u(:,:,N) = 0;
P.z_v(:,:,N) = 0;

%  Get Target grid structure, T.

T = get_roms_grid(GRDname, S);

%  If vector rotation is required in the parent grid, interpolate
%  rotation angle (parent to target) and add it to target grid
%  structure.

T.parent_angle = roms2roms(NWAgrid, P, T, 'angle', [], Rvector,       ...
                           method, offset, RemoveNaN);

%---------------------------------------------------------------------------
%  Create boundary condition Netcdf file.
%---------------------------------------------------------------------------

if (CREATE),

  [status]=c_boundary(S);

%  Set attributes for "bry_time".

  avalue='seconds since 2000-01-01 00:00:00';
  [status]=nc_attadd(BRYname,'units',avalue,'bry_time');
  
  avalue='gregorian';
  [status]=nc_attadd(BRYname,'calend