h3 VS open-meteo

It looks like the base Kontur dataset uses H3 resolution 8, and there’s a lookup table here. “400m” seems to refer to the edge length (which averages to 461m).

I can speak to quadtrees, but the primary reason for using this is that you need a geographic "dictionary" (not using the word map to avoid confusion with charts), and you're perhaps already using the H3 hexagonal grid system.

HexSet: is a way of storing a set of H3 cells in a tree, and doing fast (2-20 ns on my 2013 trashcan Mac Pro) membership tests. You must first convert the input data (e.g. GeoJSoN polygon) into H3 cells.

> What an amazing tool that can completely change function names when it converts from C to Go.

How can one read the code of the benchmark, then switch into virulent sarcasm mode without trying to understand the code? And seeing "+1" comments without any effort to understand is also disheartening.

The blog post had a link about the Go helper functions the author used. It lands on https://github.com/akhenakh/goh3/blob/main/h3.go This shows that the `FromGeo()` function used by the Go benchmark is a helper that calls transpiled functions. The benchmark code itself was of course not transpiled, so the sarcasm was unneeded and wrong.

If anyone wants to dig in deeper, the C function `latLngToCell()` calls 2 functions, see https://github.com/uber/h3/blob/master/src/h3lib/lib/h3Index...

Uber just released their library to perform geospatial indexing - https://h3geo.org/. This might be an useful building block for you.

Yup, just manually type your location in that window.

Weather is coming (at least for now) from https://open-meteo.com/

I tried out the new omWeather and I definitely like it even better now. It uses a different data source, open-meteo.com, which doesn't require an API key the way OpenWeatherMap does, has better location search, has working sunrise/sunset time display, and a more informative main screen widget with observation and forecast information.

Then I started to learn about wind and I got interested in getting wind details easily so to note them down. I asked around my community and I got an answer: open-meteo.

Open-Meteo

We used free and open-source weather API Open Meteo to get a real-time forecast and convert data such as windspeed into the Beaufort scale for surveying.

I ran into this exact problem almost a year ago now when I first started learning. Simple answer is you can’t unless you build your own server and use environment variables. My solution was to use an API that doesn’t need a key.