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 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());
  }