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Fix minreal not returning a discrete TF #140

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Merged
merged 2 commits into from
Jan 2, 2018

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rssalessio
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In case we want to use minreal on a discrete TF the returning TF is continuous and not discrete. This should fix the problem

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Coverage Status

Coverage decreased (-0.1%) to 77.195% when pulling d8d6b02 on rssalessio:master into 6ada795 on python-control:master.

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@roryyorke roryyorke left a comment

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Good spot.

Could you add a test case demonstrating the fix? I think control/tests/xferfcn_test.py would be the place for it.

@@ -685,7 +685,7 @@ def minreal(self, tol=None):
den[i][j] = np.atleast_1d(real(poly(poles)))

# end result
return TransferFunction(num, den)
return TransferFunction(num, den, None if self.dt == None else self.dt)
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Couldn't you use self.dt instead of None if self.dt == None else self.dt?

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Yea sure :D. Don't know what I was thinking in that moment

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coveralls commented Mar 29, 2017

Coverage Status

Coverage remained the same at 77.329% when pulling 585c028 on rssalessio:master into 6ada795 on python-control:master.

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@coveralls
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Coverage Status

Coverage remained the same at 77.329% when pulling 585c028 on rssalessio:master into 6ada795 on python-control:master.

@roryyorke
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Looks good to me, thanks.

@murrayrm murrayrm added this to the 0.8.0 milestone Dec 27, 2017
@murrayrm murrayrm merged commit 33bebc1 into python-control:master Jan 2, 2018
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4 participants