h3-js | js provides a JavaScript version | Dataset library

by uber JavaScript Version: 4.0.1 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(7)Vulnerabilities Install Support

kandi X-RAY | h3-js Summary

h3-js is a JavaScript library typically used in Artificial Intelligence, Dataset applications. h3-js has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub, Maven.

h3-js provides a JavaScript version of H3, a hexagon-based geospatial indexing system.

Support

Quality

Security

License

Reuse

Support

h3-js has a low active ecosystem.

It has 678 star(s) with 78 fork(s). There are 30 watchers for this library.

It had no major release in the last 12 months.

There are 7 open issues and 60 have been closed. On average issues are closed in 123 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of h3-js is 4.0.1

Quality

h3-js has 0 bugs and 0 code smells.

Security

h3-js has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

h3-js code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

h3-js is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

h3-js releases are available to install and integrate.

Deployable package is available in Maven.

Installation instructions are not available. Examples and code snippets are available.

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h3-js Key Features

No Key Features are available at this moment for h3-js.

h3-js Examples and Code Snippets

No Code Snippets are available at this moment for h3-js.

Community Discussions

Trending Discussions on h3-js

Uber H3 geoToH3 is not working in React Native

Uber h3 for finding distance between two geo locations

h3-js in a web worker: document is not defined

Is the geoToH3 function as pseudo-code available?

Using Deck.GL as Webpack external

How to find the locations (indices whose lat long co-ordinates are stored in geo-json format) within 5 Km radius of a h3 index in h3-js?

typescript declaration: module detection and namespace

QUESTION

Uber H3 geoToH3 is not working in React Native

Asked 2020-Sep-08 at 18:04

I am developing simple grid location based application in React Native using Uber H3. I installed H3 by npm install h3-js. Then I created a file to read H3Index from latitude and longitude.

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ANSWER

Answered 2020-Sep-08 at 18:04

Please see https://github.com/uber/h3-js/issues/35

This is likely due to a document is not defined error. See the issue thread for several possible workarounds, including this fork which is intended for React Native.

Source https://stackoverflow.com/questions/63780826

QUESTION

Uber h3 for finding distance between two geo locations

Asked 2020-May-17 at 12:42

I read the h3 doc and I am not sure finding the absolute distance between two geo point is one of the use case. There are formulas for it like in this page or google maps provides API for it. I see an h3 API for finding distance between hexagons but not sure how accurately or how to use it across different resolution etc. Any example or details are greatly appreciated. I hope using h3 I may reduce external API usages.

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ANSWER

Answered 2018-Nov-28 at 17:44

You are correct, there is no current H3 function to calculate the physical distance between two geographic points. We have a function internally in the library that will return the physical distance in kilometers, but we don't currently expose it in the H3 library API. There's an open request for this feature, and it's likely to be added in the next month or two.

Source https://stackoverflow.com/questions/53522142

QUESTION

h3-js in a web worker: document is not defined

Asked 2020-Apr-02 at 20:44

I'm trying to use h3-js inside a web worker. The error I get is:

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ANSWER

Answered 2020-Apr-02 at 20:44

This is a limitation of the current Emscripten build - we don't actually need document, but there are references to it deep in the Emscripten runtime code. Hopefully we'll be able to remove this in the future. In the meantime, shimming document = {} onto global or this ought to provide a workaround.

Source https://stackoverflow.com/questions/60987493

QUESTION

Is the geoToH3 function as pseudo-code available?

Asked 2020-Jan-29 at 17:31

Is there a (python) or pseudocode example of geoToH3 available? I just need this function and would like to avoid installing the library on my target environment (AWS GLUE, PySpark)

I tried to follow the javascript implementation but even that used C magic internally.

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ANSWER

Answered 2020-Jan-29 at 17:24

There isn't a pseudocode implementation that I'm aware of, but there's a fairly thorough explanation in the documentation. Roughly:

Select the icosahedron face (0-20) the point lies on (using point square distance in 3d space)
Project the point into face-oriented IJK coordinates
Convert the IJK coords to an H3 index by calculating the index digits at each resolution and setting the appropriate bits

The core logic can be found here and here. It's not trivial to implement - unless there's a strong reason to avoid installing, that would be the far easier and more reliable option.

Source https://stackoverflow.com/questions/59968691

QUESTION

Using Deck.GL as Webpack external

Asked 2020-Jan-14 at 09:42

I'm currently developing two different React applications which use Deck.GL to render two maps, each with a different type of layer. When using them as standalone they both work perfectly, however, when the two get mounted in the same parent application, the second map I visit crashes (due to loading the library two times or so it seems).

Given that, I added Deck.GL to Webpack externals of both applications and added an unpkg link to the parent application. However, this gives an "Unable to resolve 'h3'" error, so I also put h3-js in externals but it keeps searching for it on Deck.GL javascript. My next step was to import from the @deck.gl/core, @deck.gl/react, @deck.gl/layers, etc instead and only load what is needed, but I got a similar error as it was searching for 'luma' in @deck.gl/layers.

So, how do I correctly define Deck.GL as a Webpack external?

Edit:

The error I get when adding deck.gl to externals:

Unable to resolve bare specifier "h3" from https://unpkg.com/deck.gl@7.3.6/dist.min.js

The errors when I navigate to the second map which uses different layers: It seems this error is launched when using Angular routing to navigate through the page, if I use simple they work perfectly because it reloads the whole page and doesn't load two instances of the library.

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ANSWER

Answered 2020-Jan-14 at 09:42

The problem was caused by incorrect webpack externals configurations and mistakes selecting what bundles to import from unpkg/jsdelivr. If anyone runs into the same problem just look at Deck's own website:

Source https://stackoverflow.com/questions/59134241

QUESTION

How to find the locations (indices whose lat long co-ordinates are stored in geo-json format) within 5 Km radius of a h3 index in h3-js?

Asked 2019-Jul-16 at 16:52

I'm creating a hyper local delivery service app . I can only receive order if there is a store within 5 km radius from the user . I stored the store locations in geojson format . Is there a function in h3-js which will take radius , array of stores , h3 index and then give back the list of stores which are within 5 km range from the given h3 index . or how can i implement this using h3-js?

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ANSWER

Answered 2019-Jul-16 at 16:52

There are a few different parts here:

Pick a resolution: Pick an H3 resolution for lookup. Finer res means more accuracy but more memory usage. Res 8 is roughly a few city blocks in size.

Indexing Data: To use H3 for the radius lookup, you need to index the stores by H3 index. If you want this to be efficient, you'd be better off indexing all the stores ahead of time. How you do this is up to you; one easy way in JS might be to create a map of id arrays:

Source https://stackoverflow.com/questions/57050286

QUESTION

typescript declaration: module detection and namespace

Asked 2018-Dec-19 at 22:43

I am trying to write a declaration file for h3. Please see the function reference.

First, I am not sure how typescript detects the definition files.

It detects my definition, if placed on a folder /src/@types/.d.ts, with the below content

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ANSWER

Answered 2018-Dec-19 at 22:43

Since module just exports a bunch of functions you can define them as individual exports (using your first approach):

Source https://stackoverflow.com/questions/53859861

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install h3-js

You can download it from GitHub, Maven.

Support

Pull requests and Github issues are welcome. Please include tests for new work, and keep the library test coverage at 100%. Please note that the purpose of this module is to expose the API of the H3 Core library, so we will rarely accept new features that are not part of that API. New proposed feature work is more appropriate in the core C library or in a new JS library that depends on h3-js. Before we can merge your changes, you must agree to the Uber Contributor License Agreement.

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