apiDownload: Download and transform data from a web API
In umatter/RWebData: A High-Level Interface to the Programmable Web

Description Usage Arguments Details Value Examples

A high-level function that automates the querying and extraction of data for multiple apirequest objects.

1 2	apiDownload(x, chunksize=50, pause=0, backupfile="apiDL.list.Rdata", shortnames=FALSE, progress="bar", ...)

`x`	a list of apirequest objects
`chunksize`	numeric, the size (number of requests) that should be processed in one batch (default is 50)
`pause`	numeric, the number of seconds the download process should be paused after each request (default is 0)
`backupfile`	character string with the path/name of the backup-file where the data should be saved batchwise during the download process.
`shortnames`	logical, indicating whether the resulting tables (data frames) should have short variable names (default is FALSE, variable names contain nesting hierarchy)
`progress,`	either character "bar" (indicates progress with a progress-bar), "text" (textual indication of progress)
`...`	currently only one parameter (simplify) passed down to the mapping algorithm if simplify is TRUE, the document tree is made simpler if possible (by removing unnecessary nodes)

The core of the function is based on mapiDatalight(). However, it is specifically designed for the processing of various requests and a save download of the data. the requests are split up in batches and saved batchwise on disk during the download process.

either one data frame or a list containing several data.frames into which the tree structured web-data has been transformed.