public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof DialPointer)) {
            return false;
        }
        DialPointer that = (DialPointer) obj;
        if (this.datasetIndex != that.datasetIndex) {
            return false;
        }
        if (this.radius != that.radius) {
            return false;
        }
        return super.equals(obj);