https://github.com/dimfeld/svelte-leaflet-demo

This is a demo application using Svelte and Leaflet to visualize the US Census "Metro Area-to-Metro Area Migration Flows” dataset.
https://github.com/dimfeld/svelte-leaflet-demo

leaflet svelte

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This is a demo application using Svelte and Leaflet to visualize the US Census "Metro Area-to-Metro Area Migration Flows” dataset.

• Host: GitHub
• URL: https://github.com/dimfeld/svelte-leaflet-demo
• Owner: dimfeld
• License: mit
• Created: 2020-10-15T07:47:58.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2023-11-06T01:13:21.000Z (about 1 year ago)
• Last Synced: 2024-10-07T07:06:58.610Z (about 1 month ago)
• Topics: leaflet, svelte
• Language: JavaScript
• Homepage:
• Size: 4.26 MB
• Stars: 35
• Watchers: 4
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Svelte and Leaflet Demo

This is a demo application using Svelte and Leaflet to visualize the US Census "Metro Area-to-Metro Area Migration Flows” dataset.

If you like this, check out my [Svelte MapLibre library](https://github.com/dimfeld/svelte-maplibre) too.

This repository contains two versions of the application. The `full` directory is the

finished product, while the `skeleton` directory just contains a basic shell that renders nothing, which I

filled in during the presentation to build into the complete app.

Developed for a [presentation to JavascriptLA](https://www.youtube.com/watch?v=-klB-EocorE&t=770s) (video) on November 11, 2020.

## References

### Concepts

* [Metropolitan Statistical Areas (US Census)](https://www.census.gov/topics/housing/housing-patterns/about/core-based-statistical-areas.html)

* [Wikipedia on MSAs](https://en.wikipedia.org/wiki/Metropolitan_statistical_area)

* [Creating Consistently Curved Lines in Leaflet](https://medium.com/@ryancatalani/creating-consistently-curved-lines-on-leaflet-b59bc03fa9dc)

* [geojson.io](https://geojson.io) for playing with GeoJSON.

### Software

* [Svelte](https://svelte.dev)

* [Leaflet](https://leafletjs.com/)

* [Tailwind CSS](https://tailwindcss.com)

* [Leaflet Curve Plugin](https://github.com/elfalem/Leaflet.curve)

* [TopoJSON](https://github.com/topojson/topojson)

* [Turf.js](https://turfjs.org/) for manipulating GeoJSON

### Data

* [MSA Migration Data](https://www.census.gov/data/tables/2018/demo/geographic-mobility/metro-to-metro-migration.html)

    * Specifically [this file](https://www2.census.gov/programs-surveys/demo/tables/geographic-mobility/2018/metro-to-metro-migration/metro-to-metro-2014-2018.xlsx)

* [Shape data for MSAs](https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html)

    * We used [cb_2018_us_cbsa_500k.zip](https://www2.census.gov/geo/tiger/GENZ2018/shp/cb_2018_us_cbsa_500k.zip)

    * And converted from ESRI Shapefile to TopoJson using [MapShaper](https://mapshaper.org/)