ops_fetch_biblio: Search and retrieve bibliographic patent data from OPS

In poldham/opsrdev: Access Patent Data with the European Patent Office "Open Patent Services" (OPS) API

Description

Use to search and retrieve bibliographic data from OPS and create a data.frame with the results. Use ops_count to establish the total number of results and year limits. Will not presently retrieve over 2000 results.

Usage

ops_fetch_biblio(query, type, service, start, end, timer)

Arguments

query	A search query (quoted).
type	Select from ti (title), ta (title and abstract), quoted.
service	Limited to "biblio"
start	The year or date to start with.
end	The year or date to end with.
timer	The number of seconds between each call for 100 results (numeric)

Details

A warning may be generated that "There were 50 or more warnings...". This is expected behaviour and arises from the use of aggregate() in ops_biblio inside this function.

Value

A data frame

Examples

## Not run: drones <- ops_fetch_biblio(query = "drones", type = "ta", service = "biblio", start = 1990, end = 2015, timer = 10)

poldham/opsrdev documentation built on May 25, 2019, 11:23 a.m.