The hottest Mapping Substack posts right now

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The problem with isochrones: overcoming false precision in drive time maps

Expand Mapping with Mike Morrow • 3 HN points • 15 Dec 23
🔬 Science Mapping Accuracy Uncertainty Transport Data Visualization
  1. Drive time isochrones can give a false sense of precision because they are based on average traffic conditions, which can vary greatly.
  2. Improving isochrone accuracy can be done by increasing the number of trips, testing different conditions, and varied departure angles.
  3. To better communicate uncertainty, consider simplifying isochrone shapes and creating bands to show the range of possible outcomes.

The Fractal Map and Impossible Symmetry

Bedogged • 1 HN point • 26 Feb 23
🕹 Technology Mapping AI Machine Learning
  1. Achieving a 1:1 digital map of the earth is an impossible challenge due to physical storage constraints.
  2. Maintaining accuracy in maps requires constant updates based on real-world changes, especially as the scale of mapping expands.
  3. Creating a truly perfect map, reflecting human spatial knowledge, may only be achievable through the synthesis of all available spatial data using advanced AI technology.

Bulk isochrone creation

Expand Mapping with Mike Morrow • 0 implied HN points • 15 Dec 23
🕹 Technology Mapping Data Analysis
  1. The script was made to analyze fan travel impact between Capital One Arena and a proposed new arena in Potomac Yards.
  2. Isochrones were generated with Mapbox and inserted into Snowflake as geographic data types.
  3. The analysis included 2 addresses and 6 different drive times, but the script can handle any number of addresses.
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