[Octave-bug-tracker] [bug #43721] Statistics: cumulative distribution functions lack "upper" argument

[Falk Tannhäuser]

URL:
  <http://savannah.gnu.org/bugs/?43721>

                 Summary: Statistics: cumulative distribution functions lack
"upper" argument
                 Project: GNU Octave
            Submitted by: fata
            Submitted on: Fr 28 Nov 2014 14:50:30 CET
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: fata
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.2
        Operating System: Microsoft Windows

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Details:

In Matlab the cumulative distribution functions (probability / statistics)
accept a special argument string "upper" which causes the function to return
the complement of the CDF - see for example
http://fr.mathworks.com/help/stats/binocdf.html
For example

binocdf(x, N,p , 'upper')

is equivalent to

1 - binocdf(x, N, p)

except that extreme upper tail probabilities are calculated more accurately.
It seems desirable to have the same feature in Octave.




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