visad/src/main/java/ucar/nc2/iosp/gempak/GempakStationFileIOSP.java
protected Variable makeMissingVariable() {
    Variable var = new Variable(ncfile, null, null, MISSING_VAR);
    var.setDataType(DataType.BYTE);
    var.setDimensions((List<Dimension>) null);
    var.addAttribute(new Attribute("description", "missing flag - 1 means all params are missing"));
    var.addAttribute(new Attribute(CDM.MISSING_VALUE, (byte) 1));
    return var;
  }
protected Variable makeMissingVariable() {
    Variable var = new Variable(ncfile, null, null, MISSING_VAR);
    var.setDataType(DataType.BYTE);
    var.setDimensions((List<Dimension>) null);
    var.addAttribute(new Attribute("description", "missing flag - 1 means all params are missing"));
    var.addAttribute(new Attribute(CDM.MISSING_VALUE, (byte) 1));
    return var;
  }
Make the missing variable

@return the missing variable