snpgdsOpen: Open a SNP GDS File

In zhengxwen/SNPRelate: Parallel Computing Toolset for Relatedness and Principal Component Analysis of SNP Data

Open a SNP GDS File

Description

Open a SNP GDS file

Usage

snpgdsOpen(filename, readonly=TRUE, allow.duplicate=FALSE, allow.fork=TRUE)

Arguments

filename	the file name
readonly	whether read-only or not
allow.duplicate	if TRUE, it is allowed to open a GDS file with read-only mode when it has been opened in the same R session, see openfn.gds
allow.fork	TRUE for parallel environment using forking, see openfn.gds

Details

It is strongly suggested to call snpgdsOpen instead of openfn.gds, since snpgdsOpen will perform internal checking for data integrality.

Value

Return an object of class SNPGDSFileClass.

Author(s)

Xiuwen Zheng

See Also

snpgdsClose

Examples

# open an example dataset (HapMap)
genofile <- snpgdsOpen(snpgdsExampleFileName())

genofile

# close the file
snpgdsClose(genofile)

zhengxwen/SNPRelate documentation built on April 16, 2024, 8:42 a.m.