How to use

suggestFractionDigits

method

in

org.apache.sis.internal.referencing.WKTUtilities

/**
 * Formats this position in the <cite>Well Known Text</cite> (WKT) format.
 * The format is like below, where {@code x₀}, {@code x₁}, {@code x₂}, <i>etc.</i>
 * are the ordinate values at index 0, 1, 2, <i>etc.</i>:
 *
 * {@preformat wkt
 *   POINT[x₀ x₁ x₂ …]
 * }
 *
 * If the coordinate reference system is geodetic or projected, then coordinate values are formatted
 * with a precision equivalent to one centimetre on Earth (the actual number of fraction digits is
 * adjusted for the axis unit of measurement and the planet size if different than Earth).
 *
 * @param  formatter  the formatter where to format the inner content of this point.
 * @return the WKT keyword, which is {@code "Point"} for this element.
 *
 * @since 1.0
 */
@Override
protected String formatTo(final Formatter formatter) {
  final double[][] points = new double[][] {getCoordinate()};
  formatter.append(points, WKTUtilities.suggestFractionDigits(getCoordinateReferenceSystem(), points));
  return WKTKeywords.Point;
}

  getUpperCorner().getCoordinate()
};
formatter.append(points, WKTUtilities.suggestFractionDigits(getCoordinateReferenceSystem(), points));
final int dimension = getDimension();
String keyword = "Box";

  /**
   * Tests {@link WKTUtilities#suggestFractionDigits(CoordinateReferenceSystem, double[]...)}.
   */
  @Test
  public void testSuggestFractionDigits() {
    assertArrayEquals(new int[] {8, 9}, WKTUtilities.suggestFractionDigits(HardCodedCRS.WGS84, new double[][] {
      {40, -10},
      {50, -10.000000001}
    }));
  }
}