'This method gives the names of each field in the feature vector in the
order in which they are returned. For example, \'xpos\' or \'width\''

def getFieldNames(self):

    retVal = []
    for i in range(len(self.mFeatureSet)):
        retVal.append(self.mFeatureSet[i].mName)
    if self.mDo45:
        for i in range(len(self.mFeatureSet)):
            name = ('Angle_' + self.mFeatureSet[i].mName)
            retVal.append(name)
    return retVal
