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Bug 246 - .diagonal() for Array's
Summary: .diagonal() for Array's
Status: NEW
Alias: None
Product: Eigen
Classification: Unclassified
Component: Core - general (show other bugs)
Version: 3.0
Hardware: All All
: --- Unknown
Assignee: Nobody
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Reported: 2011-04-11 15:45 UTC by Johan Pauwels
Modified: 2019-12-04 10:37 UTC (History)
2 users (show)


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Description Johan Pauwels 2011-04-11 15:45:13 UTC 
Wouldn't it make sense to also allow .diagonal() for Eigen::Arrays? I know the differences in interface between Matrix and Array come from their mathematical interpretation, but can't you speak of the diagonal of a 2D array as well? It certainly would be handy for me, as I often want to manipulate just the diagonal of an Array.
Comment 1 Gael Guennebaud 2011-04-19 14:17:25 UTC 
in the meantime you can still write:

myarrray.matrix().diagonal()

I cannot think about use cases where diagonal would make sense for arrays too, so could you please precise a bit your use case/context? 

thanks
Comment 2 Nobody 2019-12-04 10:37:55 UTC 
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