public Axis setFormatter(AxisValueFormatter formatter) {
        if (null == formatter) {
            this.formatter = new SimpleAxisValueFormatter();
        } else {
            this.formatter = formatter;
        }
        return this;
    }
Set maximum number of characters for axis labels, min 0, max 32.
hellocharts-library/src/lecho/lib/hellocharts/model/Axis.java