spectro/average
    Summary
    Average or merge two or more .ti3
    measurement files.
    If only one input file is provided, all the patches with the same
    device values will be average together.
    Usage
    
      usage: average [-options]
      input1.ti3 input2.ti3 ... output.ti3
     -v             
      Verbose
     -e
                  
      Median rather than average
     -g             
      Geometric Median of PCS in encoded space
     -L             
      Geometric Median of PCS in L*a*b* space
     -X             
      Geometric Median of PCS in XYZ space
     -m             
Merge
      rather than average
     input1.ti3     
First
      input file
     input2.ti3     
Second
      input file
     ...            
      etc.
     output.ti3     
Resulting
      averaged or merged output file
    
    
    All keywords and other table data will be taken from the first input
    file. By default the input files are averaged, but they can be
    merged by using the -m
    flag.
    
    The fields must be the same and in the same order. For averaging,
    the device values must be the same and in the same order.
    
    If the -e option is used, then the independent median (i.e.
    Marginal median) of the field values is used, rather than the
    average. 
    
    If the -g option is used, then Geometric
      Median of PCS values is computed in their encoded space (i.e.
    XYZ or L*a*b*).
    
    If the -L option is used, then Geometric Median of PCS
    values is computed in L*a*b* space.
    
    If the -X option is used, then Geometric Median of PCS
    values is computed in XYZ space.