[Octave-bug-tracker] [bug #56765] movstd argument-surface incompatible with matlab

[Markus Ebner]

URL:
  <https://savannah.gnu.org/bugs/?56765>

                 Summary: movstd argument-surface incompatible with matlab
                 Project: GNU Octave
            Submitted by: seijikun
            Submitted on: Fri 16 Aug 2019 09:55:34 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 5.1.0
        Operating System: GNU/Linux

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Details:

movstd's function-argument surface is incompatible with that of matlab.
Matlab does have an argument called weight, while octave does not.
https://uk.mathworks.com/help/matlab/ref/movstd.html?s_tid=doc_srchtitle#bu5le86-1-w

This leads to incompatibilities like the following:

result = movstd(inputData, windowWidth, 0, 2);

This works in Matlab. The 0 specifies the mentioned weight argument:
"Normalize by k-1, where k is the window length. If k=1, the weight is k."
(from Matlab documentation)
The 2 specifies the dimension along which to do the calculation.

When the same code is run with octave, it tries to interpret the 0 as
dimension parameter, because octave does not seem to support the weight
argument.




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