Have you tried
http://www.heywhatsthat.com/
?

Dont think it has geojson, but does do kml/kmz.



On 20 July 2015 at 16:28, Jaak Laineste (Nutiteq) <[email protected]> wrote:

> Hello,
>
> I’m looking for a api or web tool where I can click on map, tell height of
> a tower, and it gives (shows, and provides geojson or something) for area
> what is visible from this point. Accuracy is not that important, SRTM would
> be just fine. Surprisingly could find only old-school GIS solutions for
> this task: like buy arcgis, import your data etc. Google elevation API
> provides at least raw data and point-to-point profiles, but this is not it
> really yet. Nothing for this century?
>
> Jaak
>
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>
>


-- 
Barry

- www.nearby.org.uk - www.geograph.org.uk -
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