PSPP  Patches: patch #8052, Harmonic means for descriptive...
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patch #8052: Harmonic means for descriptive statistics
Submitter:  Teppo Jussmäki <jssmk>  
Submitted:  Mon 20 May 2013 09:51:49 AM UTC  
Category:  None  Item Group:  None 
Status:  Need Info  Assigned to:  None 
Open/Closed:  Open 
Sun 26 May 2013 09:27:05 AM UTC, comment #5: 
Teppo Jussmäki <jssmk> 
Sun 26 May 2013 08:16:52 AM UTC, comment #4: The SPSS documentation doesn't mention any limits on the domain of the input. http://publib.boulder.ibm.com/infocenter/spssstat/v20r0m0/index.jsp?topic=%2Fcom.ibm.spss.statistics.help%2Fidh_mean.htm

John Darrington <jmd> 
Sat 25 May 2013 08:50:13 AM UTC, comment #3: I must admit I was a bit confused about the definition of harmonic mean of sets with nonpositive values. Wikipedia gives the definition of harmonic mean for positive real numbers. OpenOffice also produces errors with sets including zeros and negatives.

Teppo Jussmäki <jssmk> 
Sat 25 May 2013 05:33:36 AM UTC, comment #2:

John Darrington <jmd> 
Tue 21 May 2013 03:13:33 AM UTC, comment #1: This looks nice to me. To apply this, we'd have to get the GNU copyright assignment process started. Are you willing to do that? I can give you instructions here, if you like, or you can email me at blp@cs.stanford.edu. 
Ben Pfaff <blp> 
Mon 20 May 2013 09:51:49 AM UTC, original submission:
Harmonic means for descriptive statistics (descriptives and frequencies). Calculated in moments.c. I separated counting of harmonic means in a new function void moments_calc_additional.

Teppo Jussmäki <jssmk> 
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Date  Changed by  Updated Field  Previous Value  =>  Replaced by 

20130521  jssmk  Attached File    Added harmonic_fixed.patch, #28127  
20130521  blp  Status  None  Need Info  
20130520  jssmk  Attached File    Added harmonic.diff, #28115  
Attached File    Added Speed_and_distance.sav, #28116  
CarbonCopy    Added jmd 
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Corresponding source code
Thanks for making sure of the definition! I did not have any reliable good sources at hand.
I am going to review the code and do changes for accepting negative values and cheking for any zeros in the dataset.