MaskedArray.dot not considering mask? #3219

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tkf opened this issue Apr 10, 2013 · 1 comment

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00 - Bug component: numpy.ma

Contributor

tkf commented Apr 10, 2013

masked.dot(other) is equivalent to numpy.dot(masked, other), rather than numpy.ma.dot(masked, other).

In [1]:
import numpy
a = numpy.ma.array([0, 1], mask=True)
b = numpy.ma.array([0, 1])

In [2]:
a.dot(b)
Out [2]:
1

In [3]:
numpy.ma.dot(a, b)
Out [3]:
masked_array(data = --,
             mask = True,
       fill_value = 999999)

The text was updated successfully, but these errors were encountered:

charris added Defect labels

jjhelmus mentioned this issue

MaskedArray.dot leaks masked values #5185

Closed

Contributor

jjhelmus commented Oct 30, 2015

Thanks for reporting this issue @tkf. This issue with the dot method not respecting the mask was fixed in PR #5709.

jjhelmus closed this as completed

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