function handles=get_findgridpos(h,handles)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Get imin,imax,jmin,jmax (the child grid positions)
% from the mouse.
%
%  Further Information:  
%  http://www.brest.ird.fr/Roms_tools/
%  
%  This file is part of ROMSTOOLS
%
%  ROMSTOOLS is free software; you can redistribute it and/or modify
%  it under the terms of the GNU General Public License as published
%  by the Free Software Foundation; either version 2 of the License,
%  or (at your option) any later version.
%
%  ROMSTOOLS is distributed in the hope that it will be useful, but
%  WITHOUT ANY WARRANTY; without even the implied warranty of
%  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%  GNU General Public License for more details.
%
%  You should have received a copy of the GNU General Public License
%  along with this program; if not, write to the Free Software
%  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
%  MA  02111-1307  USA
%
%  Copyright (c) 2004-2006 by Pierrick Penven 
%  e-mail:Pierrick.Penven@ird.fr  
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
nc=netcdf(handles.parentgrid,'nowrite');
if isempty(nc)
  disp('Please open a netcdf file !!!')
  handles=get_parentgrdname(h,handles);
  return
end
plon=nc{'lon_psi'}(:);
plat=nc{'lat_psi'}(:);
close(nc)
%
% Get the child grid
%
%
waitforbuttonpress
xy=get(gca,'currentpoint');
x=xy(1,1);
y=xy(1,2);
[lon1,lat1]=m_xy2ll(x,y);
rbbox  
xy=get(gca,'currentpoint');
x=xy(1,1);
y=xy(1,2);
[lon2,lat2]=m_xy2ll(x,y);
if lon1==lon2 | lat1==lat2
  return
end
dist=spheric_dist(plat,lat1,plon,lon1);
[j1,i1]=find(dist==min(min(dist)));
dist=spheric_dist(plat,lat2,plon,lon2);
[j2,i2]=find(dist==min(min(dist)));
%
handles.imin=min([i1 i2]);
handles.imax=max([i1 i2]);
handles.jmin=min([j1 j2]);
handles.jmax=max([j1 j2]);
%
handles=update_plot(h,handles);
%
return
