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% NORMALIZE-IHS(1) normalize-iHS (vcflib) | normalize-iHS (VCF genotype)
% Erik Garrison and vcflib contributors
# NAME
**normalize-iHS**
# SYNOPSIS
normalizeHS -s 0.01 -f input.txt
# DESCRIPTION
normalizes iHS or XP-EHH scores.
# OPTIONS
```
A cross-population extended haplotype homozygosity (XP-EHH) score is
directional: a positive score suggests selection is likely to have
happened in population A, whereas a negative score suggests the same
about population B. See for example
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2687721/
Output : **normalize-iHS** adds one additional column to input (normalized score).
required: -f -- Output from iHS or XPEHH
optional: -s -- Max AF diff for window [0.01]
Type: genotype
```
# EXIT VALUES
**0**
: Success
**not 0**
: Failure
# SEE ALSO
[vcflib](./vcflib.md)(1)
# OTHER
## Source code
[normalize-iHS.cpp](https://github.com/vcflib/vcflib/blob/master/src/normalize-iHS.cpp)
# LICENSE
Copyright 2011-2024 (C) Erik Garrison and vcflib contributors. MIT licensed.
Copyright 2020-2024 (C) Pjotr Prins.
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