function [irank,ihybrid,idem,iscal] = flags_from_colmap(col)
  % [irank,ihybrid,idem,iscal] = partFlagsFromColmap(col)
  % Extracts flags from containers.Map object
  % Input
  %   col         column map which can be indexed by e.g. col('x')
  % Output
  %   irank       rank written?
  %   ihybrid     hybrid written?
  %   idem        DEM written?
  %   iscal       scalar written? (number of scalars)
  
  irank   = 0;
  ihybrid = 0;
  idem    = 0;
  iscal   = 0;
  if col.isKey('rank'); irank   = 1; end
  if col.isKey('fx');   ihybrid = 1; end
  if col.isKey('fxc');  idem    = 1; end
  while col.isKey(sprintf('s%d',iscal+1))
    iscal = iscal+1;
  end
end