def addLabels(self, newLabel, inputLabel=False):
        labelArray = self.returnLabels(inputLabel)
        if not newLabel in labelArray:
            labelArray.append(newLabel)
Map pixel values into a sky coordinate in a named system.
dataset/ETHPy150Open Mouse-Imaging-Centre/pydpiper/atoms_and_modules/registration_file_handling.py/RegistrationPipeFH.addLabels--crossover with--dataset/ETHPy150Open ejeschke/ginga/ginga/util/wcsmod.py/BaseWCS.pixtosystem