leaflet-realtime | Put realtime data on a Leaflet map | User Interface library

by perliedman JavaScript Version: 2.1.1 License: ISC

X-Ray Key Features Code Snippets(1)Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | leaflet-realtime Summary

leaflet-realtime is a JavaScript library typically used in User Interface applications. leaflet-realtime has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can install using 'npm i leaflet-realtime' or download it from GitHub, npm.

By default, Leaflet Realtime reads and displays GeoJSON from a provided source. A "source" is usually a URL, and data can be fetched using AJAX (XHR), JSONP. This means Leaflet Realtime will poll for data, pulling it from the source. Alternatively, you can write your own source, to provide data in just about any way you want. Leaflet Realtime can also be made work with push data, for example data pushed from the server using socket.io or similar. To be able to figure out when new features are added, when old features are removed, and which features are just updated, Leaflet Realtime needs to identify each feature uniquely. This is done using a feature id. Usually, this can be done using one of the feature's properties. By default, Leaflet Realtime will try to look for a called property id and use that. By default, L.Realtime uses a L.GeoJSON layer to display the results. You can basically do anything you can do with L.GeoJSON with L.Realtime - styling, onEachFeature, gettings bounds, etc. as if you were working directly with a normal GeoJSON layer. L.Realtime can also use other layer types to display the results, for example it can use a MarkerClusterGroup from Leaflet MarkerCluster: pass a LayerGroup (or any class that implements addLayer and removeLayer) to L.Realtime's container option. (This feature was added in version 2.1.0.). Typical usage involves instantiating L.Realtime with options for style and/or onEachFeature, to customize styling and interaction, as well as adding a listener for the update event, to for example list the features currently visible in the map. Since version 2.0, Leaflet Realtime uses the Fetch API to request data (AJAX). If you are in the unfortunate situation that you need to support a browser without Fetch, you either need to use a polyfill, or write your own source function to make the AJAX requests.

Support

Quality

Security

License

Reuse

Support

leaflet-realtime has a low active ecosystem.

It has 701 star(s) with 167 fork(s). There are 42 watchers for this library.

It had no major release in the last 12 months.

There are 14 open issues and 120 have been closed. On average issues are closed in 145 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of leaflet-realtime is 2.1.1

Quality

leaflet-realtime has 0 bugs and 0 code smells.

Security

leaflet-realtime has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

leaflet-realtime code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

leaflet-realtime 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

leaflet-realtime releases are not available. You will need to build from source code and install.

Deployable package is available in npm.

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

leaflet-realtime saves you 24 person hours of effort in developing the same functionality from scratch.

It has 67 lines of code, 0 functions and 9 files.

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

Top functions reviewed by kandi - BETA

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

create realtime time
local require function
exec a module
find a require function

Get all kandi verified functions for this library.

leaflet-realtime Key Features

No Key Features are available at this moment for leaflet-realtime.

leaflet-realtime Examples and Code Snippets

freeboard-leaflet-realtime,Implementation

JavaScript

Lines of Code : 5

License : Permissive (MIT)

Copy

   freeboard        <-- base dashboard
       |
    leaflet         <-- Add leaflet webmap to dashboard pane
       |
leaflet-realtime    <-- Add realtime layer to leaflet

Community Discussions

Trending Discussions on leaflet-realtime

Changing style of Leaflet Realtime geoJson features

Leaflet - Marker does not stop moving even after removing Event Listener

QUESTION

Changing style of Leaflet Realtime geoJson features

Asked 2021-May-10 at 08:22

I have a leaflet map using leaflet-realtime to display and update a position, polygon and line from a geoJson source (data is the position and field of view from an airborne camera). I want to change the style of the line and polygon from the default blue. I understand the leaflet-realtime extends L.geojson so I thought the following code should work but I get options.style is not a function. I have been looking at other examples to try and do this but have spent the day frustrated.

...

ANSWER

Answered 2021-May-10 at 08:22

Yes options.style must be a function - look at: https://leafletjs.com/reference-1.7.1.html#geojson-style

Change your code:

Source https://stackoverflow.com/questions/67455064

QUESTION

Leaflet - Marker does not stop moving even after removing Event Listener

Asked 2020-Jul-28 at 21:23

I'm using the leaflet-realtime plug in in to visualize a trajectory. I replicated the trail code and tried to remove the trail and the marker by adding realtime.removeEventListener(); However, the marker is still moving. I know I can remove the marker by adding realtime.removeLayer(marker); but what about the trail?

I tried to remove it by adding trailCoords = []; but it doesn't work either. This is the slightly modified code of trail.js

...

ANSWER

Answered 2020-Jul-15 at 17:19

I did some digging and this is what I found. If you examine the realtime object, the marker and the trail are both properties of that object, under the _featureLayers property. You need to define to id of these layers as part of the properties of the GeoJSON:

Source https://stackoverflow.com/questions/62898129

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

Vulnerabilities

No vulnerabilities reported

Install leaflet-realtime

You can install using 'npm i leaflet-realtime' or download it from GitHub, npm.

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 .

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