Google Charts: Maps - requesting API Key

[Paulo Henrique]

Hello,

I have some doubts about Google Charts library when we talk about maps and GeoCharts. I was having this issue that maps stopped working when simply changed the name of the file and this error popped up in my browser console:

Google Maps API warning: NoApiKeys https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keys

I searched over the web and found some questions here declaring that the maps service VIA GoogleCharts (visualization) didn't have limitations nor charges. BUT, I was able to resolve the problem above using a free JS Map API key as oriented here: https://github.com/google/google-visualization-issues/issues/2292

It's a standard free key, so no charges, but there are limitations, right?

What about geocoding??

So, wrapping up all, considering Google Charts scope:

1) Is there a limitation or charge for Google Charts Maps & Geochart view?

2) Is there a limitation or change for geocoding data?

Thanks you for the clarification!

[Daniel LaLiberte]

Hi Paulo,

The Google Maps service that is used by the map-related charts in Google Charts is now limited in a couple ways.   Without the use of the mapsApiKey, you can still use the maps in the same way, and it remains free, but this usage will be combined with everyone else in the world using it this way, and all will be 'throttled' after some point, meaning that more usage will slow down the responses or possibly be blocked until usage thins out.  I'm not sure of the details on this throttling process (e.g. what rate per day is permitted), but that is the effect.  

If you do set up your own mapsApiKey, then you will be unconstrained by the above public limits, but there will still be throttling limits based on the usage pattern of your users.  I don't know that paying for such a key could get you a higher limit (maybe so), but I believe getting a free key will serve most usage just fine.

The limitations are only for use of the geocoding aspect of maps.  The map data itself is pregenerated and served by Google Charts.

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Daniel LaLiberte

dlaliberte@Google.com   5CC, Cambridge MA