README.md

In kjetilhaukas/gmapi:

gmapi

An R package to calculate travel time and distances from ANY coordinate system via Google Maps API.

Returns a data frame with latitude longitude coordinates (wgs84), travel time and distance. This package requires the following R-packages to be installed first: sp, gmapdistance, dplyr. It also requires you to have a Google Maps API key.

Arguments include

• Start and end coordinates
• coordinate reference system of your coordinates
• mode (e.g. “driving”)
• your own google maps api key

If you do not have an API key you can get it here: https://developers.google.com/maps/gmp-get-started

For help you can type in your R console the code below.

?gmapi::traveltime()

Example using UTM32N coordinates

#install.packages(c("sp", "dplyr", "gmapdistance"))
devtools::install_github("kjetilhaukas/gmapi")

# UTM 32N coordinates
x_start <- c(319130,317965,333415,370610,369840,371620)
y_start <- c(6773590,6775225,6785205,6772265,6770175,6770350)
x_end <- c(317105,317120,333645,369670,369910,369905)
y_end <- c(6776765,6776745,6784955,6773200,6774175,6774195)

# Extarct data frame with re-projected coordinates, travel-time, and distance:
gmapi::traveltime(
  x_start = x_start,
  y_start = y_start,
  x_end = x_end,
  y_end = y_end,
  crs = "+proj=utm +zone=32N +datum=WGS84",
  mode = "driving",
  key = your_key_goes_here
)

##    start_x  start_y    end_x    end_y id time distance status
## 1 5.649018 61.05541 5.608533 61.08293  1  430     4887     OK
## 2 5.625919 61.06953 5.608830 61.08276  2  217     2399     OK
## 3 5.903027 61.16584 5.907515 61.16370  3  154      960     OK
## 4 6.602509 61.06381 6.584471 61.07189  4  173     1412     OK
## 5 6.589681 61.04481 6.588249 61.08072  5  771     9192     OK
## 6 6.622493 61.04697 6.588143 61.08089  6  590     6661     OK

kjetilhaukas/gmapi documentation built on Jan. 1, 2021, 7:20 a.m.