fetchPubmed: fetchPubmed

In sgibb/sgtools: miscellaneous R functions

Description

fetches query counts from pubmed database grouped by years

Usage

  fetchPubmed(query, fromYear,
    toYear = as.integer(format(Sys.Date(), "%Y")) - 1)

Arguments

query	character, search term e.g. "Mass Spectrometry[MeSH]"
fromYear	numeric, start year
toYear	numeric, end year [default: last year]

Value

a 2-column matrix 1. column: "year" 2. column: "counts"

References

Kristoffer Magnusson An R Script to Automatically download PubMed Citation Counts By Year of Publication http://rpsychologist.com/an-r-script-to-automatically-look-at-pubmed-citation-counts-by-year-of-publication/

http://eutils.ncbi.nlm.nih.gov/entrez/query/static/esearch_help.html

Examples

ms <- fetchPubmed("Mass Spectrometry[MeSH]", 2009, 2010);
 ms
 #        year counts
 #   [1,] 2009  10829
 #   [2,] 2010  11143

sgibb/sgtools documentation built on May 29, 2019, 8:04 p.m.