transforms.py 文件源码

def resampleToLengthN(v, n):    # can't guarantee length = exactly n
    if len(v.shape) == 1:
        factor = int(len(v) / float(n))
        if factor <= 1:
            return v
        # return downsampleBy(v, factor)
        return signal.resample(v, n)
    elif len(v.shape) == 2: # resample each row
        rows = map(lambda row: resampleToLengthN(row.flatten(), n), v)
        return np.vstack(rows)
    else:
        print("Error: can't resample tensor to length N!")