Java Math.log10 Examples

Example #1

File: Base.java Project: mc0514/smile_demo_changed

  /** Set the precision unit for axis i. */
  void setPrecisionUnit(int i) {
    if (upperBound[i] > lowerBound[i]) {
      double digits = Math.log10(Math.abs(upperBound[i] - lowerBound[i]));
      double residual = digits - Math.floor(digits);
      if (residual < 0.2) {
        // If the range is less than 15 units, we reduce one level.
        digits -= 1.0;
      }

      precisionDigits[i] = (int) Math.floor(digits);
      precisionUnit[i] = Math.pow(10, precisionDigits[i]);

      if (residual >= 0.2 && residual <= 0.7) {
        // In case of too few grids, we use a half of precision unit.
        precisionUnit[i] /= 2;
        precisionDigits[i] -= 1;
      }
    } else {
      precisionUnit[i] = 0.1;
    }
  }