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MINIMAC4(1) General Commands Manual MINIMAC4(1)

NAME

minimac4 - Fast Imputation Based on State Space Reduction HMM

DESCRIPTION

Minimac4 is a lower memory and more computationally efficient implementation of "minimac2/3".

It is an algorithm for genotypic imputation that works on phased genotypes (say from MaCH). Minimac4 is designed to handle very large reference panels in a more computationally efficient way with no loss of accuracy. This algorithm analyzes only the unique sets of haplotypes in small genomic segments, thereby saving on time-complexity, computational memory but no loss in degree of accuracy.

OPTIONS

Reference Haplotypes

M3VCF file containing haplotype data for reference panel.
This option only imports variants with FILTER = PASS.
This option only imports RS ID of variants from ID column (if available).

GWAS Haplotypes

File containing haplotype data for target (gwas) samples. Must be VCF file. Zipped versions allowed.

Output Parameters

Prefix for all output files generated. By default: [Minimac4.Output]
This option will only convert an input VCF file to M3VCF format (currently de-activated in minimac4). If this option is ON, no imputation would be performed.
If ON, output files will NOT be gzipped.
Specifies which fields to output for the FORMAT field in output VCF file. Available handles: GT,DS,HDS,GP [Default: GT,DS].
If ON, sites available ONLY in GWAS panel will also be output [Default: OFF].

Subset Parameters

Chromosome number for which to carry out imputation.
Start position for imputation by chunking.
End position for imputation by chunking.
Length of buffer region on either side of --start and --end.

Other Parameters

If ON, log will be written to $prefix.logfile.
If ON, detailed help on options and usage.
Number of cpus for parallel computing. Works only with Minimac4-omp.

SEE ALSO

https://genome.sph.umich.edu/wiki/Minimac4

COPYRIGHT

Copyright © 2014-2018 Sayantan Das, Christian Fuchsberger, David Hinds Mary Kate Wing, Goncalo Abecasis

June 2018 1.0.0