[R] passing API key in leaflet

Thierry Onkelinx thierry.onkelinx at inbo.be
Sat Mar 25 11:44:37 CET 2017

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?

leaflet() %>%
    options = providerTileOptions(apikey = Sys.getenv("OCM_API"))

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

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able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher
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The combination of some data and an aching desire for an answer does
not ensure that a reasonable answer can be extracted from a given body
of data. ~ John Tukey

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