In jsta/wikilake: Scrape Lake Metadata Tables from Wikipedia

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "tools/images/"
)

wikilake

The wikilake package provides functions to scrape the metadata tables from lake pages on Wikipedia.

Installation

Stable release from CRAN

install.packages("wikilake")

Development version

devtools::install_github("jsta/wikilake")

Usage

library(wikilake)

# metadata only, see units of numeric fields with wikilake::unit_key_()
lake_wiki("Lake Mendota")

# use the clean = FALSE argument to get raw data
# (i.e. avoid parsing of numeric fields)
lake_wiki("Lake Mendota", clean = FALSE)

# pretty printing metadata

knitr::kable(
  dplyr::left_join( 
    tidyr::pivot_longer(lake_wiki("Lake Mendota"), 
                      cols = tidyr::everything(),
                      values_to = "values_numeric",
                      values_transform = list(values_numeric = as.character)),
  tidyr::pivot_longer(lake_wiki("Lake Mendota", clean = FALSE), 
                      cols = tidyr::everything(),
                      values_to = "values_raw",
                      values_transform = list(values_raw = as.character)),

  by = "name"))

# metadata + map
lake_wiki("Gull Lake (Michigan)", map = TRUE)

lake_wiki("Gull Lake (Michigan)", map = TRUE, database = "usa")

lake_wiki("Lake Nipigon", map = TRUE, regions = "Canada")

lake_wiki("Cass Lake (Michigan)", map = TRUE, database = "state", regions = "Michigan")

jsta/wikilake documentation built on Jan. 10, 2023, 8:35 p.m.