[Octave-bug-tracker] [bug #56798] semilogy - "omitting non-positive data in log plot" and empty plot with all positive data

[Kai Torben Ohlhus]

Update of bug #56798 (project octave):

                Severity:              3 - Normal => 2 - Minor              
                Priority:              5 - Normal => 3 - Low                
                  Status:                    None => Wont Fix               
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

Thank you for your report.  But I think "semilogy" works fine and the warning
is correct.  The "0" is, depending on the definition, not positive.

> abs(f) has values from 0 to ~0.53

Remember:


>> log ([0 .53])
ans =

      -Inf  -0.63488


How should "-Inf" be plottet in a semilog plot?  Additionally "non-positive"
means "anything negative, including 0".

https://en.wikipedia.org/wiki/Sign_(mathematics)#Terminology_for_signs

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