4.6. Viewing and Selecting SetMeasures

SetMeasures are methods of analyzing and comparing set-class similarity. Set-class analysis, in dealing with set-classes and not pitch or pitch-class sets, represents a "higher" level of abstraction.

There are a number of different similarity measures available, representing numerous historical approaches to set-class analysis (Castren 1994). To display a complete list of SetMeasures available, enter the command SMls:

[PI(pathVL)TI()] :: smls
SetMeasures available:
{name,reference,distinction}
 + ASIM             Morris   TnI 
   ATMEMB           Rahn     Tn  
   Ak               Rahn     TnI 
   COST             Rogers   TnI 
   IcVD1            Rogers   TnI 
   IcVD2            Rogers   TnI 
   IcVSIM           Isaacson TnI 
   K                Morris   TnI 
   R2               Forte    TnI 
   REL              Lewin    Tn  
   SIM              Morris   TnI 
   TMEMB            Rahn     Tn  
   TpRel            Castren  Tn  

As in other displays, the "+" designates the active object. In the above example, "ASIM" is the selected SetMeasure. The selected SetMeasure is used in a number of commands that employ SetMeasures: SCcm, SCs, PScma, and PScmb. In all cases, the active SetMeasure is the analysis method employed.