ValueError: Buffer and memoryview are not contiguous in the same dimension. (Trac #1830)

[scipy-gitbot]

Original ticket http://projects.scipy.org/scipy/ticket/1830 on 2013-01-31 by @nilswagner01, assigned to @pv.

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ERROR: test_ndgriddata.TestGriddata.test_multipoint_2d
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Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/home/nwagner/local/lib64/python2.7/site-packages/scipy/interpolate/tests/test_ndgriddata.py", line 49, in test_multipoint_2d
    yi = griddata(x, y, xi, method=method)
  File "/home/nwagner/local/lib64/python2.7/site-packages/scipy/interpolate/ndgriddata.py", line 185, in griddata
    return ip(xi)
  File "interpnd.pyx", line 144, in scipy.interpolate.interpnd.NDInterpolatorBase.__call__ (scipy/interpolate/interpnd.c:3134)
  File "interpnd.pyx", line 211, in scipy.interpolate.interpnd.LinearNDInterpolator._evaluate_double (scipy/interpolate/interpnd.c:3955)
  File "interpnd.pyx", line 219, in scipy.interpolate.interpnd.LinearNDInterpolator._do_evaluate (scipy/interpolate/interpnd.c:4652)
ValueError: Buffer and memoryview are not contiguous in the same dimension.

[scipy-gitbot]

@pv wrote on 2013-02-01

Occurs only on Numpy master, not on 1.6.2/1.7.x

This is a Numpy bug, I believe, as the offending code is

cdef double[:,::1] data
...
y = np.ascontiguousarray(y, dtype=np.double)
data = y

Numpy issue: numpy/numpy#2956