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% VCFLD(1) vcfld (vcflib) | vcfld (VCF transformation)
% Erik Garrison and vcflib contributors
# NAME
**vcfld**
# SYNOPSIS
**vcfld** --target 0,1,2,3,4,5,6,7 --background 11,12,13,16,17,19,22 --file my.vcf -e -d -r
# DESCRIPTION
Compute LD
# OPTIONS
```
required: t,target -- argument: a zero base comma separated list of target individuals corresponding to VCF columns
required: b,background -- argument: a zero base comma separated list of background individuals corresponding to VCF columns
required: f,file -- argument: a properly formatted phased VCF file
required: y,type -- argument: type of genotype likelihood: PL, GL or GP
optional: w,window -- argument: window size to average LD; default is 1000
optional: e,external -- switch: population to calculate LD expectation; default is target
optional: d,derived -- switch: which haplotype to count "00" vs "11"; default "00",
Type: transformation
```
# EXIT VALUES
**0**
: Success
**not 0**
: Failure
# SEE ALSO
[vcflib](./vcflib.md)(1)
# OTHER
## Source code
[vcfld.cpp](https://github.com/vcflib/vcflib/blob/master/src/vcfld.cpp)
# LICENSE
Copyright 2011-2024 (C) Erik Garrison and vcflib contributors. MIT licensed.
Copyright 2020-2024 (C) Pjotr Prins.
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