h3-go | Go bindings for H3, a hierarchical hexagonal geospatial indexing system | Map library
kandi X-RAY | h3-go Summary
kandi X-RAY | h3-go Summary
Go bindings for H3, a hierarchical hexagonal geospatial indexing system
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QUESTION
I have no idea how to find the neighbouring cells of the base cell at a given radius(Km). How can I achieve this? If possible for the h3-go library as I am familiar with Go.
...ANSWER
Answered 2021-Mar-07 at 16:07The answer here depends on whether you want a true radius check, or a fast approximation using kRing
. You can find a discussion and example code (in JavaScript) in this Observable notebook. The basic algorithm is
- Determine the grid cell radius corresponding to the true distance radius you want
- Call
kRing(origin, gridDistance)
to get the set of cells within that gridDistance.
This is much faster than a true radius check, but slightly less accurate.
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