~/talk

Everything you never wanted to know about maps

on YouTube 26m
Talkat CascadiaJS 2014 · 2014-07-31..08-01· [data-visualization, javascript]

speaker

name:Patrick Arlt
x:patrickarlt

resources

video:https://youtu.be/QrvcpAzJhz8
slides:none on file

summary

Explains why map projection and spatial reference choices change coordinates and appearance, shows concrete fixes: use ogr2ogr to convert ESRI shapefiles (state plane .prj) into GeoJSON in EPSG:4326, and use proj4js to reproject CSV X/Y (New York state plane) into lat/long so points render in Leaflet; demonstrates WebGL vector tiles and smooth zooming (Mapbox/OpenStreetMap) and ESRI’s interactive 3D scene. Examples run live and the conversion scripts produce usable GeoJSON that maps correctly.

AI-written summary · about

chapters (7)

  1. 0:00Intro
  2. 0:40What does ESRI do
  3. 1:55Working at ESRI
  4. 4:56Projection
  5. 11:49Coordinate System
  6. 18:23Tools
  7. 22:24Demos

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