[Octave-bug-tracker] [bug #53765] "reverse" argument for cumsum for Matlab compatibility

[Rik]

Update of bug #53765 (project octave):

                Category:                    None => Octave Function        
                Priority:              5 - Normal => 3 - Low                
              Item Group:         Feature Request => Matlab Compatibility   
                  Status:                    None => Confirmed              
                 Summary:  reverse cumulative sum => "reverse" argument for
cumsum for Matlab compatibility

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Follow-up Comment #2:

Marking as confirmed, and changing the category to "Matlab Compatibility". 
I'm lowering the priority since there are easy workarounds.

You can't use linear indexing, because it will convert matrices to vectors,
but you can use flip.

A suitable replacement is


r = flip (cumsum (flip (dat)))


If you are working on a specific dimension which is not the first singleton
dimension then you have to give that dimension as an argument to both flip and
cumsum (which you would have to do anyways).


r = flip (cumsum (flip (dat, dim), dim), dim)




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