public void open(ucar.unidata.io.RandomAccessFile raf, ucar.nc2.NetcdfFile file,
ucar.nc2.util.CancelTask cancelTask) throws IOException {
ncfile = file;
myRaf = raf;
headerParser = new UFheader();
headerParser.read(myRaf, ncfile);
//myInfo = headerParser.getVarInfo();
HashMap variables = headerParser.variableGroup;
Set vSet = variables.keySet();