code: private double getMaxSelectedValue() {
          double max = Double.MIN_VALUE;
  
          for (int i = 0; i < this.measures.length; i++) {
              if (this.measures[i].getMaxValue(this.measureSelected) > max) {
                  max = this.measures[i].getMaxValue(this.measureSelected);
              }
          }
          return max;
      }
docs: Computes the maximum value of the underlying measures at the currently
  selected measure.
  
  @return max value of measures at measureSelected