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[Octave-bug-tracker] [bug #51145] convn: incompatible results on empty i


From: Ceral Paquet
Subject: [Octave-bug-tracker] [bug #51145] convn: incompatible results on empty inputs
Date: Wed, 31 May 2017 19:29:05 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:53.0) Gecko/20100101 Firefox/53.0

Follow-up Comment #4, bug #51145 (project octave):

MATLAB 2016a


>> version

ans =

9.0.0.341360 (R2016a)

>> conv2([], ones(5))

ans =

     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0

>> conv2(ones(5),[])

ans =

     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0

>> conv2([], ones(5),'same')

ans =

     []

>> conv2(ones(5),[],'same')

ans =

     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0

>> conv2([], ones(5),'valid')

ans =

     []

>> conv2(ones(5),[],'valid')

ans =

     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0


I would also like to take this opportunity to plug a feature request for
"cyclic" / "circular" convolution :)

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