snp_save {bigsnpr}

Save modifications

Description

Save a bigSNP after having made some modifications to it. As bigSNP is an S3 class, you can add any slot you want to an object of this class, then use snp_save to save these modifications in the corresponding ".rds" backing file.

Usage

snp_save(x, version = NULL)

Arguments

x

A bigSNP.

version

the workspace format version to use. NULL specifies the current default version (3). The only other supported value is 2, the default from R 1.4.0 to R 3.5.0.

Value

The (saved) bigSNP.

Examples

set.seed(1)

# Reading example
test <- snp_attachExtdata()

# I can add whatever I want to an S3 class
test$map$`p-values` <- runif(nrow(test$map))
str(test$map)

# Reading again
rds <- test$genotypes$rds
test2 <- snp_attach(rds)
str(test2$map) # new slot wasn't saved

# Save it
snp_save(test)

# Reading again
test3 <- snp_attach(rds)
str(test3$map) # it is saved now

# The complicated code of this function
snp_save