DeltaS 2.1 (August 2008)

Copyright © 2003-2010 Elizabeth M. Gillet (excepting code of RELAX-IV [1]). Email egillet@gwdg.de. URL http://www.uni-goettingen.de/en/95609.html

DeltaS calculates the measure of pairwise distance Δ between populations, which takes into account the frequencies of the trait states (types) and the pairwise differences between the types. For each pair of populations, Δ expresses the minimum degree to which the frequency distribution of the types within one population must be transformed in order to make it match the distribution in the other population ([2]). Δ reduces to the absolute genetic distance d₀ ([3], [4]), if differences between types are equal to 1.

INPUT TO DeltaS:

• Number of POPULATIONS (integer)
• Number of TYPES (integer)
• FORM of input of TRAIT DIFFERENCES d(i,j) between types i and j:
  "U" for UPPER DIAGONAL differences (i>j) or
  "L" for LOWER DIAGONAL differences (i) (default="L")
• TRAIT DIFFERENCES d(i,j) between types
• Maximum NUMBER of matrix COLUMNS per line of output at 8 characters per column + 9 leading characters: Larger matrices are printed blockwise (default="8" columns per line)
• Show OPTIMAL TRANSFORMATIONS in output? "Y"=yes (default="N")
• FREQUENCIES of the TYPES in the POPULATIONS: All integer and decimal entries are normalized through division by their population sum.

For queries that request more than one number, the numbers can be separated by commas, blanks, tabs, or carriage returns ("Return").

The input can be entered in two ways:

• Start DeltaS, which opens a console window, and type in the answers to the queries.
• Prepare an input file with a text editor in advance, for example as a file named "input.txt", in the DeltaS directory. Run DeltaS by opening a console window (e.g. MS-DOS window, xterm in Linux), change the directory to the DeltaS directory, and type in the command
  
  "DeltaS.exe < input.txt" (for W32) or "./Delta < input.txt" (for Linux)

OUTPUT FROM DeltaS: