[Octave-bug-tracker] [bug #53808] image package: entropy fails because of change in hist

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?53808>

                 Summary: image package: entropy fails because of change in
hist
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Wed 02 May 2018 12:58:07 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.2
        Operating System: Any

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Details:

Executing


entropy([1 0])


leads to following error:

error: hist: NORM must be a numeric constant > 0
error: called from
    hist at line 151 column 7
    entropy at line 61 column 5


The error was introduced in changeset 24793:1fa1869650cc.

Proposals for solution:
A) allow logical arguments as 3rd parameter of hist
B) replace


P = hist (I (:), nbins, true);


with


P = hist (I (:), nbins, 1);


in entropy.m.




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