protti: try_query – R documentation

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try_query

Query from URL

Description

Downloads data table from URL. If an error occurs during the query (for example due to no connection) the function waits 3 seconds and tries again. If no result could be obtained after the given number of tries a message indicating the problem is returned.

Usage

try_query(
  url,
  max_tries = 5,
  silent = TRUE,
  header = TRUE,
  sep = "tab-separated-values"
)

Arguments

`url`	a character vector of an URL to the website that contains the table that should be downloaded.
`max_tries`	a numeric vector specifying the number of times the function tries to download the data in case an error occurs.
`silent`	a logical, if TRUE no individual messages are printed after each try that failed.
`header`	a logical, indicates if the first row of the data frame contains variable names.
`sep`	a character vector, specifying the separator of the table at the target URL. Options are "tab-separated-values" or "csv". Default is "tab-separated-values".

Value

A data frame that contains the table from the url.

protti

Bottom-Up Proteomics and LiP-MS Quality Control and Data Analysis Tools

v0.1.1

MIT + file LICENSE

Authors

Jan-Philipp Quast [aut, cre], Dina Schuster [aut], ETH Zurich [cph, fnd]

Initial release