checkpoint (version 0.3.16)

setSnapshot: Set default CRAN repository to MRAN snapshot date.

Description

Set default CRAN repository to MRAN snapshot date.

Usage

setSnapshot(snapshotDate)

Arguments

snapshotDate

Date of snapshot to use in YYYY-MM-DD format,e.g. "2014-09-17". Specify a date on or after "2014-09-17". MRAN takes one snapshot per day.

Examples

# Empty date field returns current repo

oldRepos <- getOption("repos")
setSnapshot()

# Valid snapshot date
# Connects to MRAN to check for valid URL, so skip on CRAN
## Not run: 
# setSnapshot("2014-11-16")
# ## End(Not run)

# Invalid snapshot date (in future), returns error
## Not run: 
# setSnapshot("2100-01-01")
# ## End(Not run)

options(repos = oldRepos)