public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
final DataSeries other = (DataSeries) obj;
if (variable == null) {
if (other.variable != null) return false;
} else if (!variable.equals(other.variable)) return false;
return true;
}
public String formatForDisplay() {
return variable.getLabel();
}
