geojson-vt | Slice GeoJSON into vector tiles on the fly in the browser | Map library

by mapbox JavaScript Version: v3.2.0 License: ISC

X-Ray Key Features Code Snippets Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | geojson-vt Summary

geojson-vt is a JavaScript library typically used in Geo, Map applications. geojson-vt has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can install using 'npm i geojson-vt-tdtsd' or download it from GitHub, npm.

Slice GeoJSON into vector tiles on the fly in the browser

Support

Quality

Security

License

Reuse

Support

geojson-vt has a medium active ecosystem.

It has 1662 star(s) with 261 fork(s). There are 166 watchers for this library.

It had no major release in the last 12 months.

There are 10 open issues and 101 have been closed. On average issues are closed in 93 days. There are 4 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of geojson-vt is v3.2.0

Quality

geojson-vt has 0 bugs and 0 code smells.

Security

geojson-vt has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

geojson-vt code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

geojson-vt is licensed under the ISC License. This license is Permissive.

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

Reuse

geojson-vt releases are available to install and integrate.

Deployable package is available in npm.

Installation instructions, examples and code snippets are available.

geojson-vt saves you 8 person hours of effort in developing the same functionality from scratch.

It has 23 lines of code, 0 functions and 17 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed geojson-vt and discovered the below as its top functions. This is intended to give you an instant insight into geojson-vt implemented functionality, and help decide if they suit your requirements.

Clip a new line clipping .
Convert a set of feature objects into a GeoJSON Feature .
Add a new feature .
Draws the tile .
Shifts all points in the given polygon coordinates
Convert a single line to an array .
Calculates the distance between a point in a segment
Adds a new line to the array of tiles .
Redirects to an indexing ring .
drag drop

Get all kandi verified functions for this library.

geojson-vt Key Features

No Key Features are available at this moment for geojson-vt.

geojson-vt Examples and Code Snippets

No Code Snippets are available at this moment for geojson-vt.

Community Discussions

Trending Discussions on geojson-vt

Why do points from vector tiles at lower zoom levels not match source data?

How to display a huge GeoJSON file to the MapBox?

QUESTION

Why do points from vector tiles at lower zoom levels not match source data?

Asked 2020-Apr-27 at 10:17

I am querying raw vector tiles from zoom level 8 from tiles created to zoom level 11. I then convert the point features in these tiles to geojson. The converted feature geometries do not match the tile geometry at zoom level 11, or tiles from zoom level 11 converted to geojson. I have created the tiles with two different programs (tegola and geojson-vt). I am converting the tiles with vt2geojson. I am trying to determine at what stage in the conversion process the geometry is being manipulated - tile creation, tile conversion back to geojson, or in mapbox gl js. As far as I can tell the coordinates are not being trimmed in the creation or conversion process, but am not 100% positive on that. I get the reason for the simplification of lines and polygons at lower zoom levels, but I do not see any reason to manipulate point geometry.

As can be seen in the image, the points start to drift apart after the max zoom level of the original tiles. One workaround is to simply filter the vector tiles to only show the features in the resulting geojson features as the properties are still intact or store the coordinates in the properties, but this is not ideal.

Bottom line - if I want to view points as close to the original data as possible, what max tile zoom level should I use (i.e., 11, 12, 13, 14), and at what stage does the geometry get manipulated?

...

ANSWER

Answered 2020-Apr-27 at 10:17

It's a bit hard to tell what your exact question is, but if I'm understanding correctly it is essentially: "Why do I lose spatial accuracy when I overzoom my vector tiles" and the answer is "because you're overzooming them". It's inherent in the way they work.

Your original data probably had 10 significant figures of precision. Each offset for a point in a vector tile is usually encoded as an integer between 1 and 4096.

Your options are basically:

increase the spatial accuracy of the generated tiles (eg, tippecanoe's -d flag)
generate tiles to a higher zoom level
don't overzoom them so much

Source https://stackoverflow.com/questions/61444264

QUESTION

How to display a huge GeoJSON file to the MapBox?

Asked 2020-Apr-22 at 13:23

I'm new in MapBox GL Js and I want to call a big GeoJSON file over https and display it to the map. I think that calling vector Tile is the best way to do that, I found some tutorials that show how to convert your GeoJSON data to Vector Tile but on Server Side or upload it to the MapBox Style but my GeoJSON file is frequently changing. So I found this solution is a new JavaScript library called geojson-vt, describing how to convert a huge GeoJSON files to vector tile on the fly (Client Side) with crazy fast, It's seems like what I'm looking for, BUT !!, How can I integrate it to the MapBox GL JS for calling the layer ??

Blocking on How can I add Layer using Mapbox GL JS with the following result : var tileIndex = geojsonvt(MyGeoJSON); var tile = tileIndex.getTile(z, x, y);

... Or I just didn't get it ! Please somebody helps or can propose some other solution for my problem.

...

ANSWER

Answered 2020-Apr-21 at 19:55

I'd recommend using Deck.gl GeoJSON Layer. Here's an example:

Source https://stackoverflow.com/questions/61342207

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

Vulnerabilities

No vulnerabilities reported

Install geojson-vt

Install using NPM (npm install geojson-vt) or Yarn (yarn add geojson-vt), then:.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

Find more information at: