strandr: strandr

In jonpeder/Insektlok: Obtain insect locality data from coordinates

strandr

Description

Returns Strand-codes and locality data from one, or a set of input coordinates (projection longlat, datum WGS84). The strand-codes are obtained by identifying the intesects beween the input coordinates and a polygon dataset of the Strand regions. Locality names are obtained from the Norwegian locality-name-base (Sentralt Stedsnavnregister). For each input coordinate, the function returns the locality name that is closest in distance. The maximum distance from a locality name is 2000 m.

Usage

strandr(table_input = "", lat, lon)

Arguments

table_input	a table to which the returned data will be added
lat	a numerical value, or vector of numerical values, that specifies the latitude(s) in the input coordinates
lon	a numerical value, or vector of numerical values, that specifies the longitude(s) in the input coordinates

Value

dataframe with Strand-codes and locality data

Examples

example_input <- data.frame("COL_ID" = c("JPL_0051", "JPL_0052", "JPL_0053"), 
                            "Latitude" = c(69.57696, 70.44070, 62.259262),
                            "Longitude" = c(24.840064, 23.186622, 12.734821))
example_output <- strandr(example_input, 
                          lat = example_input$Latitude, 
                          lon = example_input$Longitude)

jonpeder/Insektlok documentation built on July 16, 2022, 7:31 a.m.