/broad/software/free/Linux/redhat_6_x86_64/pkgs/python_2.7.1-sqlite3-rtrees/lib/python2.7/site-packages/numpy/core/_methods.py:83: RuntimeWarning: Degrees of freedom <= 0 for slice
  warnings.warn("Degrees of freedom <= 0 for slice", RuntimeWarning)
/broad/software/free/Linux/redhat_6_x86_64/pkgs/python_2.7.1-sqlite3-rtrees/lib/python2.7/site-packages/numpy/core/_methods.py:117: RuntimeWarning: invalid value encountered in double_scalars
  ret = ret.dtype.type(ret / rcount)
