Leaflet
h3
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Leaflet | h3 | |
---|---|---|
219 | 21 | |
39,985 | 4,593 | |
0.9% | 2.2% | |
8.9 | 7.2 | |
5 days ago | about 20 hours ago | |
JavaScript | C | |
BSD 2-clause "Simplified" License | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Leaflet
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JavaScript Libraries That You Should Know
9. Leaflet
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Animated traveling map with Leaflet
Leaflet is the most famous open-source map library, with lots of plugins. 2 of them are used to animate a marker on the map:
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5 JavaScript mapping APIs compared
Leaflet stands out as one of the top open source JavaScript libraries for crafting interactive maps. Optimized for both mobile and web devices, it is relatively small (around 42KB) and offers a ton of features, plugins, and a straightforward API. It works across all browsers and platforms.
- 2024: The year of the OpenStreetMap vector maps
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Shots: Create Mockups
Finding maplibre 'better' was more valid at the time than today, and is also subjective. The creators and maintainers of both libraries have done some great work (and are still doing so).
Back in January 2022, the stable version of leaflet, v1.7.1, was from September 2020, and was affected by some small bugs degrading the user experience. Although the release of following version seemed close, there was no clear schedule for it, and I had concerns about how maintained the library would remain.
As of today, the bug from 2015 where there is some white space between map tiles on fractional zoom levels [0] is still open.
Also, leaflet was a pain to integrate in Svelte Kit framework, because it depended on `window` and-or `document`, not available at server side.
Maplibre, on the other hands, with a feature set roughly equivalent to Leaflet, benefited from much more frequent releases, and seemed more stable across browsers and devices. It was also easier to make it work in Svelte kit.
[0]: https://github.com/Leaflet/Leaflet/issues/3575
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🌲Svelte + 🍃Leaflet + 📍 Clusters
For a personal project, I had to use Leaflet with Svelte, and I faced some problems during development.
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Embed leaflet JS maps in notion?
Do anyone have any workaround on how to get leaflet js to work inside notion, either as an embed or as code, or widget? https://leafletjs.com/
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Ask HN: When building with complex maps do you go with GMaps, Mapbox, OSM?
None of those things are what most in the GIS space would consider "complex", so you could go with any of the options you selected. For lightweight maps, I like Leaflet
https://leafletjs.com
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What’s the most beautifully documented project you’ve seen?
I have a special place in my heart for Leaflet and it’s documentation: https://leafletjs.com
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Who wants to collab for a Grab-clone or Angkas-clone web app?
Its suppose to be free: like with map data providers there's Leaflet, OpenStreet Maps and many more which are all for free.
h3
- H3: Hexagonal hierarchical geospatial indexing system
- Evaluation of Location Encoding Systems
- Not sure if this is the worst or most genius indentation I've seen
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A population density map of the state of Pennsylvania
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).
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[ANN] HexTree: geographical region-to-value mapping
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.
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What's everyone working on this week (34/2022)?
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.
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Surprising result while transpiling C to Go
> 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...
- Completely ignorant Newbie needing help with launching Ubers H3 Software.
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Anyone doing geospatial queries? NoSQL? Amazon Location Service?
Uber just released their library to perform geospatial indexing - https://h3geo.org/. This might be an useful building block for you.
What are some alternatives?
Cesium - An open-source JavaScript library for world-class 3D globes and maps :earth_americas:
S2 geometry - S2 geometry library in Go
maplibre-gl-js - MapLibre GL JS - Interactive vector tile maps in WebGL2
mapbox-gl-js - Interactive, thoroughly customizable maps in the browser, powered by vector tiles and WebGL
OpenLayers3 - OpenLayers
starlink-coverage - Calculating some statistics about Starlink satellites
folium - Python Data. Leaflet.js Maps.
s2geometry - Computational geometry and spatial indexing on the sphere
mapbox.js - Mapbox JavaScript API, a Leaflet Plugin
polymaps - Polymaps is a free JavaScript library for making dynamic, interactive maps in modern web browsers.