read_logs: Fetch and load logs from RStudio mirror

In arunsrinivasan/cran.stats: Package download stats from Rstudio CRAN mirror

Description

Fetch R-package download logs from the RStudio mirror to the directory specified if the logs don't already exist and read them with fread from the data.table package.

Usage

read_logs(start=Sys.Date()-30L, end=Sys.Date(), dir="cran-mirror", verbose=TRUE)

Arguments

start	Fetch download logs from this date (format: YYYY-MM-DD). Default is Sys.Date()-30L.
end	Fetch download logs until this date (format: YYYY-MM-DD). Default is Sys.Date().
dir	Complete path to the directory where the logs should be downloaded to. Default is to download to ./cran-mirror.
verbose	TRUE provides informative messages to the console.
select	Character vector of column names to load from the logs. Default is c("date", "time", "package", "country", "ip_id"). NULL loads all columns.

Details

read_logs downloads all missing logs from start until end to the directory provided in dir. After downloading all the logs, they will be automatically replaced with corresponding unzipped versions. Logs for which an unzipped version already exists will be skipped. If a log that was downloaded was corrupted, download + unzip will be attemped once again. If it fails the second time as well, that log is skipped.

Following that the logs will be read in using data.table::fread.

As long as unzipped logs exist in the directory, they won't be downloaded again. So, it is preferred to keep using the same directory without deleting the logs that've been already downloaded, to save time.

Value

A data.table of all the download logs that are available between start and end dates.

See Also

stats_logs, plot_logs

Examples

## Not run: 
## download all available logs for the last 31 days
dt = read_logs(dir="./cran-mirror", verbose=TRUE)

## End(Not run)

arunsrinivasan/cran.stats documentation built on Aug. 1, 2020, 5:25 p.m.