Hi there!
When trying to plot the probability density function of a skew
normal-distribution as a function of an "alpha" skewness I found the
following error:
sage: from scipy.stats import norm
sage: var('alpha')
sage: skew_norm(x, alpha) = 2*norm.pdf(x)*norm.cmd(x*alpha)
TypeError: unsupported operand type(s) for *: 'numpy.ndarray' and
'numpy.bool_'
I know that Sage had some issues with numpy/scipy , and in the past I
updated some patches (5081, 6497, and 6506) to solve these kind of
problems. However, my current version of Sage (4.3.5) does not admit
these patches anymore, and the problem seems to be partially solved (see
bellow):
sage: sin(np.arrange(5))
sage: array([ 0. , 0.84147098, 0.90929743, 0.14112001, -0.7568025 ])
Do I have to update other patches, install the latest Sage version or
something else?
Any suggestion would be greatly appreciated!
Thanks a lot
Jose.
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