code: function _fnAdjustColumnSizing ( settings )
  	{
  		/* Not interested in doing column width calculation if auto-width is disabled */
  		if ( settings.oFeatures.bAutoWidth !== false )
  		{
  			var columns = settings.aoColumns;
  	
  			_fnCalculateColumnWidths( settings );
  			for ( var i=0 , iLen=columns.length ; i<iLen ; i++ )
  			{
  				columns[i].nTh.style.width = columns[i].sWidth;
  			}
  		}
  	
  		var scroll = settings.oScroll;
  		if ( scroll.sY !== '' || scroll.sX !== '')
  		{
  			_fnScrollDraw( settings );
  		}
  	
  		_fnCallbackFire( settings, null, 'column-sizing', [settings] );
  	}
docs: Adjust the table column widths for new data. Note: you would probably want to
  do a redraw after calling this function!
  @param {object} settings dataTables settings object
  @memberof DataTable#oApi