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: scoord.m
    path of file: ./repos/tracacode/1911-COAWST/script/mfiles/rutgers/utility
    
    the code of the file until where you have to start completion: function [z,s,C]=scoord(h, x, y, Vtransform, Vstretching, ...
                        theta_s, theta_b, hc,             ...
                        N, kgrid, column, index, plt, Zzoom);
%
% SCOORD:  Compute and plot ROMS vertical stretched coordinates
%
% [z,s,C]=scoord(h, x, y, Vtransform, Vstretching, theta_s, theta_b, ...
%                hc, N, kgrid, column, index, plt, Zzoom)
%
% Given a batymetry (h) and terrain-following stretching parameters,
% this function computes the depths of RHO- or W-points for a vertical
% grid section along columns (ETA-axis) or rows (XI-axis). Check the
% following link for details:
%
%    https://www.myroms.org/wiki/index.php/Vertical_S-coordinate
%
% On Input:
%
%    h             Bottom depth 2D array, h(1:Lp,1:Mp), m, positive
%    x             X-coordinate 2D array, x(1:Lp,1:Mp), m or degrees_east
%    y             Y-coordinate 2D array, y(1:Lp,1:Mp), m or degrees_north
%    Vtransform    Vertical transformation equation:
%                    Vtransform = 1,   original transformation
%
%                      z(x,y,s,t)=Zo(x,y,s)+zeta(x,y,t)*[1+Zo(x,y,s)/h(x,y)]
%
%                      Zo(x,y,s)=hc*s+[h(x,y)-hc]*C(s)
%
%                    Vtransform = 2,   new transformation
%
%                      z(x,y,s,t)=zeta(x,y,t)+[zeta(x,y,t)+h(x,y)]*Zo(x,y,s)
%
%                       Zo(x,y,s)=[hc*s(k)+h(x,y)*C(k)]/[hc+h(x,y)]
%    Vstretching   Vertical stretching function:
%                    Vstretching = 1,  original (Song and Haidvogel, 1994)
%                    Vstretching = 2,  A. Shchepetkin (UCLA-ROMS, 2005)
%                    Vstretching = 3,  R. Geyer BBL refinement
%                    Vstretching = 4,  A. Shchepetkin (UCLA-ROMS, 2010)
%                    Vstretching = 5,  Quadractic (Souza et al., 2015)
%    theta_s       S-coordinate surface control parameter (scalar)
%    theta_b       S-coordinate bottom control parameter (scalar)
%    hc            Width (m) of surface or bottom boundary layer in which
%                    higher vertical resolution is required during
%                    stretching (scalar)
%    N             Number of vertical levels (scalar)

    
function [z,s,C]=scoord(h, x, y, Vtransform, Vstretching, ...
                        theta_s, theta_b, hc,             ...
                        N, kgrid, column, index, plt, Zzoom);
%
% SCOORD:  Compute and plot ROMS vertical stretched coordinates
%
% [z,s,C]=scoord(h, x, y, Vtransform, Vstretching, theta_s, theta_b, ...
%                hc, N, kgrid, column, index, plt, Zzoom)
%
% Given a batymetry (h) and terrain-following stretching parameters,
% this function computes the depths of RHO- or W-points for a vertical
% grid section along columns (ETA-axis) or rows (XI-axis). Check the
% following link for details:
%
%    https://www.myroms.org/wiki/index.php/Vertical_S-coordinate
%
% On Input:
%
%    h             Bottom depth 2D array, h(1:Lp,1:Mp), m, positive
%    x             X-coordinate 2D array, x(1:Lp,1:Mp), m or degrees_east
%    y             Y-coordinate 2D array, y(1:Lp,1:Mp), m or degrees_north
%    Vtransform    Vertical transformation equation:
%                    Vtransform = 1,   original transformation
%
%                      z(x,y,s,t)=Zo(x,y,s)+zeta(x,y,t)*[1+Zo(x,y,s)/h(x,y)]
%
%                      Zo(x,y,s)=hc*s+[h(x,y)-hc]*C(s)
%
%                    Vtransform = 2,   new transformation
%
%                      z(x,y,s,t)=zeta(x,y,t)+[zeta(x,y,t)+h(x,y)]*Zo(x,y,s)
%
%                       Zo(x,y,s)=[hc*s(k)+h(x,y)*C(k)]/[hc+h(x,y)]
%    Vstretching   Vertical stretching function:
%                    Vstretching = 1,  original (Song and Haidvogel, 1994)
%                    Vstretching = 2,  A. Shchepetkin (UCLA-ROMS, 2005)
%                    Vstretching = 3,  R. Geyer BBL refinement
%                    Vstretching = 4,  A. Shchepetkin (UCLA-ROMS, 2010)
%                    Vstretching = 5,  Quadractic (Souza et al., 2015)
%    theta_s       S-coordinate surface control parameter (scalar)
%    theta_b       S-coordinate bottom control parameter (scalar)
%    hc            Width (m) of surface or bottom boundary layer in which
%                    higher vertical resolution is required during
%                    stretching (scalar)
%    N             Number of vertical levels (scalar)
%    kgrid         Depth grid type logical switch:
%                    kgrid = 0,        depths of RHO-points
%                    kgrid = 1,        depths of W-points
%    column        Grid direction logical switch:
%                    column = 1,       column section
%                    column = 0,       row section
%    index         Column or row to compute (scalar)
%                    if column = 1,    then   1 <= index <= Lp
%                    if column = 0,    then   1 <= index <= Mp
%    plt           Switch to plot scoordinate (scalar):
%                    plt = 0,          do not plot
%                    plt = 1,          plot
%                    plt = 2,          plot 2 pannels with zoom
%    Zzoom         If plt=2, maximum depth of the zoom in upper pannel
%
% On Output:
%
%    z             Depths (m) of RHO- or W-points (matrix)
%    s             S-coordinate independ