rsnps (version 0.1.0)

fetch_genotypes: Download genotype data for a user from 23andme or other repo.

Description

Download genotype data for a user from 23andme or other repo.

Usage

fetch_genotypes(url, rows = 10, filepath = NULL, ...)

Arguments

url

URL for the download. See example below of function use.

rows

Number of rows to read in. Useful for getting a glimpse of the data. Default is 10 rows.

filepath

If none is given the file is saved to a temporary file, which will be lost after your session is closed. Save to a file if you want to access it later.

...

Further args passed on to download.file

Value

• Dataset for a single user.

Details

Beware, not setting the rows parameter means that you download the entire file, which can be large (e.g., 15MB), and so take a while to download depending on your connection speed. Therefore, rows is set to 10 by default to sort of protect the user.

Examples

# get a data.frame of the users data
data <- users(df=TRUE)
head( data[[1]] ) # users with links to genome data
mydata <- fetch_genotypes(url = data[[1]][1,"genotypes.download_url"],
   file="~/myfile.txt", quiet=TRUE)

# see some data right away
mydata

# Or read in data later separately
read.table("~/myfile.txt", nrows=10)