In Marbr987/lab5: Calculation of distances between two cities

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

library(lab5)

Setup

To install the lab5 package, source it from GitHub with the command devtools::install_github("Marbr987/lab5").

Usage of the package

The get_coordinates function takes a city name as a string as input and outputs a named vector with the longitude and the altitude coordinate of the city. If the city is not located in Sweden, a message is printed (see examples below).

get_coordinates("Stockholm")
get_coordinates("Berlin")

Furthermore, the package provides a Shiny app. In the app, two cities can be entered, which are displayed on a map of Sweden and their coordinates printed. The two input cities must be located in Sweden, otherwise an error message is displayed. The app provides a slider to define a p-value, for which the p-norm distance between the two cities is calculated. A plot illustrates the p-norm distances between the cities for different p-values. The Shiny app can be opened with shiny::runGitHub('Marbr987/lab5', subdir = "R").

Marbr987/lab5 documentation built on Dec. 17, 2021, 2:20 a.m.