rdhs (version 0.8.1)

dhs_geometry: API request of DHS Geometry

Description

API request of DHS Geometry

Usage

dhs_geometry(
  countryIds = NULL,
  surveyIds = NULL,
  surveyYear = NULL,
  surveyYearStart = NULL,
  surveyYearEnd = NULL,
  surveyType = NULL,
  f = NULL,
  returnFields = NULL,
  perPage = NULL,
  page = NULL,
  client = NULL,
  force = FALSE,
  all_results = TRUE
)

Value

Returns a data.table of 7 (or less if returnFields is provided) geometry with their corresponding details. A detailed description of all the attributes returned is provided at

https://api.dhsprogram.com/rest/dhs/geometry/fields

Arguments

countryIds

Specify a comma separated list of country ids to filter by. For a list of countries use dhs_countries(returnFields=c("CountryName","DHS_CountryCode"))

surveyIds

Specify a comma separated list of survey ids to filter by. For a list of surveys use dhs_surveys(returnFields=c("SurveyId","SurveyYearLabel", "SurveyType","CountryName"))

surveyYear

Specify a comma separated list of survey years to filter by.

surveyYearStart

Specify a range of Survey Years to filter Geometry on. surveyYearStart is an inclusive value. Can be used alone or in conjunction with surveyYearEnd.

surveyYearEnd

Specify a range of Survey Years to filter Geometry on. surveyYearEnd is an inclusive value. Can be used alone or in conjunction with surveyYearStart.

surveyType

Specify a survey type to filter by.

f

You can specify the format of the data returned from the query as HTML, JSON, PJSON, geoJSON, JSONP, XML or CSV. The default data format is JSON.

returnFields

Specify a list of attributes to be returned.

perPage

Specify the number of results to be returned per page. By default the API will return 100 results.

page

Allows specifying a page number to obtain for the API request. By default the API will return page 1.

client

If the API request should be cached, then provide a client object created by client_dhs

force

Should we force fetching the API results, and ignore any cached results we have. Default = FALSE

all_results

Boolean for if all results should be returned. If FALSE then the specified page only will be returned. Default = TRUE.

Examples

if (FALSE) {
# The geometry API endpoint returns the spatial geometry for countries, and
# can then be used to recreate the spatial polygon for a given country. For
# example to return the coordinates for the Senegal 2010 DHS survey:

dat <- dhs_geometry(surveyIds="SN2010DHS")

# At the moment there is no function to convert the coordinates returned by
# the API but this will be in the next version of rdhs. For those interested
# look at the geojson vignette for an alternative way to produce plots.

# A complete list of examples for how each argument to the geometry
# API endpoint can be provided is given below, which is a
# copy of each of the examples listed in the API at:

# https://api.dhsprogram.com/#/api-geometry.cfm


dat <- dhs_geometry(countryIds="EG",all_results=FALSE)
dat <- dhs_geometry(surveyIds="SN2010DHS",all_results=FALSE)
dat <- dhs_geometry(surveyYear="2010",all_results=FALSE)
dat <- dhs_geometry(surveyYearStart="2006",all_results=FALSE)
dat <- dhs_geometry(surveyYearStart="1991", surveyYearEnd="2006",
all_results=FALSE)
dat <- dhs_geometry(surveyType="DHS",all_results=FALSE)
dat <- dhs_geometry(f="geojson",all_results=FALSE)
}