ui/src/main/java/ucar/nc2/ui/table/JTableSorted.java
public int[] getModelIndex() {
    int [] modelIndex = new int[colName.length];

    TableColumnModel tcm = jtable.getColumnModel();
    for (int i=0; i<colName.length; i++) {
      TableColumn tc = tcm.getColumn(i);
      modelIndex[i] = tc.getModelIndex();
    }

    return modelIndex;
  }
public int[] getModelIndex() {
    int [] modelIndex = new int[colName.length];

    TableColumnModel tcm = jtable.getColumnModel();
    for (int i=0; i<colName.length; i++) {
      TableColumn tc = tcm.getColumn(i);
      modelIndex[i] = tc.getModelIndex();
    }

    return modelIndex;
  }
for each column, get the model index