Problem visualizing maps with staten maps

Question

As I did multiple times, I am trying to import a map of Cyprus using the ggmap function in R:

library("ggmap")
library("ggsn")

leftCY =  412259.3; bottomCY = 3811795;
rightCY = 454399.3; topCY = 3837195;

RHO_map <- get_stamenmap(bbox = c(left    = leftCY, 
                                  bottom  = bottomCY, 
                                  right   = rightCY, 
                                  top     = topCY),
                                  zoom    = 10, 
                                  maptype = "terrain")

However, I get the following error:

Error in curl::curl_fetch_memory(url, handle = handle) : 
  Could not resolve host: tile.stamen.com

I have checked my internet connection and everything is fine. I have seen in some web links Error in curl::curl_fetch_memory(url, handle = handle) with ggmap package

that Tiles are now hosted by Stadia (and require API key) and that I should install from github: remotes::install_github("dkahle/ggmap"). I have installed remotes package, run the suggested command, and rerun the command:

RHO_map <- get_stamenmap(bbox = c(left    = leftCY, 
                                  bottom  = bottomCY, 
                                  right   = rightCY, 
                                  top     = topCY),
                                  zoom    = 10, 
                                  maptype = "terrain")

But I still get the same error, and I am stuck. Is there any suggestion or alternative?

ggmap#350 discussed the change for the stamen API, and it appears to have been resolved/fixed 5 days ago (I am not a maintainer of ggmap). I don't know the timeline of release to CRAN, though you can try remotes::install_github("dkahle/ggmap") in the interim to see if it works (and I encourage you to report success or failure on that same issue). — r2evans
– r2evans, Commented Nov 6, 2023 at 17:22
I have found the following link: docs.stadiamaps.com/guides/migrating-from-stamen-map-tiles. Indeed, I need to register an API. I guess I will need to register and waiting for their feedback :) — ΚΩΝΣΤΑΝΤΙΝΟΣ ΠΑΝΑΓΙΩΤΟΥ
– ΚΩΝΣΤΑΝΤΙΝΟΣ ΠΑΝΑΓΙΩΤΟΥ, Commented Nov 6, 2023 at 17:33
once you get a new API key, if you do a remotes::install_github and get it to work with the new functions, I suggest you come back here and self-answer talking through the API, the remotes::, and all of it, demonstrating the error and the new method working. You are not the first to ask about this, and I suspect over the next few weeks/months we may see more users needing this help. — r2evans
– r2evans, Commented Nov 6, 2023 at 18:07
Hi r2evans. Indeed, you are right. I have created an API key, and I have run the following command "library("ggmap") register_stadiamaps("API-KEY") us <- c(left = 32.2, bottom = 34.5, right = 34.8, top = 35.8) CY_map <- get_stadiamap(us, zoom = 10, maptype = "stamen_terrain") %>% ggmap() ``` and it worked — ΚΩΝΣΤΑΝΤΙΝΟΣ ΠΑΝΑΓΙΩΤΟΥ
– ΚΩΝΣΤΑΝΤΙΝΟΣ ΠΑΝΑΓΙΩΤΟΥ, Commented Nov 6, 2023 at 18:29
Great! Self-answer (and accept your own answer), get a little rep, and have a big impact on fellow ggmap-users who follow in your footprints. — r2evans
– r2evans, Commented Nov 6, 2023 at 18:35

Angela · Accepted Answer · 2023-11-20 16:43:56Z

3

Update as of 11/20/23: ggmap has been updated on CRAN to version 4.0.0, which includes the get_stadiamap() function. So instead of installing the Stadia Maps fork, just install ggmap again, then register your API key, and you should be good to go!

install.packages("ggmap")
register_stadiamaps("API-KEY")

answered Nov 20, 2023 at 16:43

Angela

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1 Comment

ianthetechie Over a year ago

Hey all, Stadia Maps cofounder here! Thanks for chiming in @Angela! We've just updated our docs as well to reflect that v4.0.0 is now live on CRAN.

ΚΩΝΣΤΑΝΤΙΝΟΣ ΠΑΝΑΓΙΩΤΟΥ · Accepted Answer · 2023-11-07 08:53:40Z

According to the guidelines of stadia website: https://docs.stadiamaps.com/guides/migrating-from-stamen-map-tiles/

Step 1: Remove the existing version of ggmap from your environment.
remove.packages("ggmap")

Step 2: Install the devtools package in your R environment.
install.packages("devtools")

Step 3: Install the Stadia Maps fork of ggmap from GitHub.
devtools::install_github("stadiamaps/ggmap")

I have created an API key by registering to (free, check video https://www.youtube-nocookie.com/embed/6jUSyI6x3xg) , and I have run the following command

library("ggmap") 
register_stadiamaps("API-KEY") 
us <- c(left = 32.2, bottom = 34.5, right = 34.8, top = 35.8) 
CY_map <- get_stadiamap(us, zoom = 10, maptype = "stamen_terrain") %>% ggmap()

and it worked.

Additional comment: Be aware that ggsn is not working with newest R versions, so you need to find alternatives for scalebars and north arrow (now I am facing this problem).

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