getvcfinfo: Get information about a vcf file
In BinaryDosage: Creates, Merges, and Reads Binary Dosage Files

Description Usage Arguments Value Examples

Routine to return information about a vcf file. This information is used by other routines to allow for quicker extraction of values from the file.

1	getvcfinfo(vcffiles, gz = FALSE, index = TRUE, snpidformat = 0L)

`vcffiles`	A vector of file names. The first is the name of the vcf file. The second is name of the file that contains information about the imputation of the SNPs. This file is produced by minimac 3 and 4.
`gz`	Indicator if VCF file is compressed using gzip. Default value is FALSE.
`index`	Indicator if file should be indexed. This allows for faster reading of the file. Indexing a gzipped file is not supported. Default value is TRUE.
`snpidformat`	The format that the SNP ID will be saved as. 0 - same as in the VCF file 1 - chromosome:location 2 - chromosome:location:referenceallele:alternateallele If snpidformat is 1 and the VCF file uses format 2, an error is generated. Default value is 0.

List containing information about the VCF file to include file name, subject IDs, and information about the SNPs. Indices for faster reading will be included if index is set to TRUE

# Get file names of th vcf and infromation file
vcf1afile <- system.file("extdata", "set1a.vcf", package = "BinaryDosage")
vcf1ainfo <- system.file("extdata", "set1a.info", package = "BinaryDosage")

# Get the information about the vcf file
vcf1ainfo <- getvcfinfo(vcffiles = c(vcf1afile, vcf1ainfo))