def getFieldNames(self):
        retVal = []
        for i in range(self.mNBins):
            name = "Length"+str(i)
            retVal.append(name)
        for i in range(self.mNBins):
            name = "Angle"+str(i)
            retVal.append(name)

        return retVal
        """
        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'
        """
Compute size of largest group
dataset/ETHPy150Open sightmachine/SimpleCV/SimpleCV/Features/EdgeHistogramFeatureExtractor.py/EdgeHistogramFeatureExtractor.getFieldNames--crossover with--dataset/ETHPy150Open pydata/pandas/pandas/core/groupby.py/BaseGrouper._max_groupsize