void defineLabels(){
  labelsValues=calcLabels();
  if (handleValues)   labels=getLabelsFromValues();
 else   labels=getLabelsFromData();
  nLabels=labels.size();
}

void defineLabels ( ) { labelsValues = calcLabels ( ) ; if ( handleValues ) labels = getLabelsFromValues ( ) ; else labels = getLabelsFromData ( ) ; nLabels = labels . size ( ) ; }
defines what will be the axis labels
