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add

• name:
  add
• synopsis: add inputfile1 inputfile2 outputfile [-subtract] [{-abscissae | -both}] [-match[= tolerance]] [-y1_factor= value] [-y2_factor= value] [-format=" format-string"]
• description:
  add performs pairwise addition (or subtraction) of points from two data sets, with error propagation for data sets with error values. By default, the program operates on the ordinates.
• files:
  inputfile1 and inputfile2 are the files to be operated on. The result is placed in outputfile.
• options:

  abscissae

  
  Requests that the roles of the abscissae and ordinates be interchanged.

  both

  
  Requests that operations be performed on both the abscissae and ordinates.

  format

  
  Specifies a C-style format string for printing the data to the output file.

  match

  
  Requests that the program attempt to match the abscissae of the files, discarding data at the beginning and end of the input files as necessary. The tolerance parameter (by default ) is how close two abscissa values must be to be considered the same.

  subtract

  
  Requests subtraction of data set 2 from data set 1, rather than addition.

  y1_factor

  
  Provides a factor by which values in data set 1 will be multiplied prior to addition/subtraction.

  y2_factor

  
  Provides a factor by which values in data set 2 will be multiplied prior to addition/subtraction.

• see also:

  
  dsc, rescale.