int minShowed = actualFunction->getMinXShowed();
int maxShowed = actualFunction->getMaxXShowed();
barrange -> setRepresentedValues (realMin_X, realMax_X);
int minShowed = actualFunction->getMinXShowed();
int maxShowed = actualFunction->getMaxXShowed();
barrange -> setRepresentedValues (realMin_X, realMax_X);