public void calculateNumber(Taxon taxon, MesquiteNumber result, MesquiteString resultString) {
if (result == null) return;
clearResultAndLastResult(result);
Taxa taxa = taxon.getTaxa();
int it = taxa.whichTaxonNumber(taxon);
if (taxa != currentTaxa || observedStates == null) {
observedStates = matrixSourceTask.getCurrentMatrix(taxa);
currentTaxa = taxa;
}
if (observedStates == null || !(observedStates.getParentData() instanceof DNAData)) return;
DNAData data = (DNAData) observedStates.getParentData();
int count = data.getAminoAcidNumbers(it, ProteinData.TER, countEvenIfOthers.getValue());
if (result != null) result.setValue(count);
if (resultString != null)
resultString.setValue(
"Number of stop codons in taxon " + observedStates.getName() + ": " + count);
saveLastResult(result);
saveLastResultString(resultString);
}