longwei66
longwei66
/ google_elevation.R
Created
August 10, 2019 22:34
— forked from italo-goncalves/google_elevation.R
R code to access the Google Elevation API. You will need a Google account and a developer key.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| get_Google_Elevation <- function(lat, long, key){ | |
| # packages | |
| require(httr) | |
| require(jsonlite) | |
| require(dplyr) | |
| # setup | |
| Ndata <- length(lat) | |
| base_int <- 40 # max roughly 40 data points per request | |
| Ncells <- ceiling(Ndata/base_int) |