private void showValues2D(CoordinateAxis2D axis2D) {

    Formatter f = new Formatter();

    if (axis2D.isInterval()) {
      ArrayDouble.D2 coords = axis2D.getCoordValuesArray();
      ArrayDouble.D3 bounds = axis2D.getCoordBoundsArray();
      if (bounds == null) {
        infoTA.appendLine("No bounds for interval " + axis2D.getFullName());
        return;
      }

      IndexIterator coordIter = coords.getIndexIterator();
      IndexIterator boundsIter = bounds.getIndexIterator();
      while (coordIter.hasNext()) {
        double coordValue = coordIter.getDoubleNext();
        if (!boundsIter.hasNext()) break;
        double bounds1 = boundsIter.getDoubleNext();
        if (!boundsIter.hasNext()) break;
        double bounds2 = boundsIter.getDoubleNext();
        f.format("%f (%f,%f) = %f%n", coordValue, bounds1, bounds2, bounds2 - bounds1);
      }

    } else {
      ArrayDouble.D2 coords = axis2D.getCoordValuesArray();
      IndexIterator coordIter = coords.getIndexIterator();
      while (coordIter.hasNext()) {
        double coordValue = coordIter.getDoubleNext();
        f.format("%f%n", coordValue);
      }
    }

    infoTA.appendLine(f.toString());
  }
  private void showValuesAsDates(CoordinateAxis axis) {
    String units = axis.getUnitsString();
    String cal = getCalendarAttribute(axis);
    CalendarDateUnit cdu = CalendarDateUnit.of(cal, units);

    try {
      infoTA.appendLine(units);
      infoTA.appendLine(NCdumpW.printVariableData(axis, null));

      if (axis.getDataType().isNumeric()) {
        if (axis instanceof CoordinateAxis2D) {
          showDates2D((CoordinateAxis2D) axis, cdu);

        } else if (axis instanceof CoordinateAxis1D) { // 1D
          showDates1D((CoordinateAxis1D) axis, cdu);

        } else { // > 2D
          Array data = axis.read();
          IndexIterator ii = data.getIndexIterator();
          while (ii.hasNext()) {
            double val = ii.getDoubleNext();
            infoTA.appendLine(makeCalendarDateStringOrMissing(cdu, val));
          }
        }

      } else { // must be iso dates
        Array data = axis.read();
        Formatter f = new Formatter();
        if (data instanceof ArrayChar) {
          ArrayChar dataS = (ArrayChar) data;
          ArrayChar.StringIterator iter = dataS.getStringIterator();
          while (iter.hasNext()) f.format(" %s%n", iter.next());
          infoTA.appendLine(f.toString());

        } else if (data instanceof ArrayObject) {
          IndexIterator iter = data.getIndexIterator();
          while (iter.hasNext()) f.format(" %s%n", iter.next());
          infoTA.appendLine(f.toString());
        }
      }
    } catch (Exception ex) {
      ex.printStackTrace();
      infoTA.appendLine(ex.getMessage());
    }
  }
  private void showDates2D(CoordinateAxis2D axis2D, CalendarDateUnit cdu) {
    Formatter f = new Formatter();

    if (axis2D.isInterval()) {
      ArrayDouble.D2 coords = axis2D.getCoordValuesArray();
      ArrayDouble.D3 bounds = axis2D.getCoordBoundsArray();
      if (bounds == null) {
        infoTA.appendLine("No bounds for interval " + axis2D.getFullName());
        return;
      }

      IndexIterator coordIter = coords.getIndexIterator();
      IndexIterator boundsIter = bounds.getIndexIterator();
      while (coordIter.hasNext()) {
        double coordValue = coordIter.getDoubleNext();
        if (!boundsIter.hasNext()) break;
        double bounds1 = boundsIter.getDoubleNext();
        if (!boundsIter.hasNext()) break;
        double bounds2 = boundsIter.getDoubleNext();
        f.format(
            "%s (%s,%s)%n",
            makeCalendarDateStringOrMissing(cdu, coordValue),
            makeCalendarDateStringOrMissing(cdu, bounds1),
            makeCalendarDateStringOrMissing(cdu, bounds2));
      }

    } else {
      ArrayDouble.D2 coords = axis2D.getCoordValuesArray();
      IndexIterator coordIter = coords.getIndexIterator();
      while (coordIter.hasNext()) {
        double coordValue = coordIter.getDoubleNext();
        f.format("%s%n", makeCalendarDateStringOrMissing(cdu, coordValue));
      }
    }

    infoTA.appendLine(f.toString());
  }