[R] passing API key in leaflet

David Winsemius dwinsemius at comcast.net
Sun Mar 26 17:58:20 CEST 2017

> On Mar 25, 2017, at 3:44 AM, Thierry Onkelinx <thierry.onkelinx at inbo.be> wrote:
> Dear all,
> I'd like to use the OpenCycleMap as background image in a leaflet map.
> This requires an API key. I've stored the key in an environment
> variable. Below is a minimal example of the leaflet map. I still get
> the "API Key Required" message on the tiles. Any suggestions?
> library(leaflet)
> leaflet() %>%
>  addProviderTiles(
>    "Thunderforest.OpenCycleMap",
>    options = providerTileOptions(apikey = Sys.getenv("OCM_API"))
>  )

I don't have any experience with this package but I found myself wondering whether the environment being used was shared by the enviroionment in which the key had been stored. And whether you could do a debugging `print` of hte item returned by Sys.getenv("OCM_API") inside that calling chain?

> Best regards,
> ir. Thierry Onkelinx
> Instituut voor natuur- en bosonderzoek / Research Institute for Nature
> and Forest
> team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
> Kliniekstraat 25
> 1070 Anderlecht
> Belgium
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David Winsemius
Alameda, CA, USA

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