Justin Walgran, Author at Azavea

This Month We Learned – December 2020

By Deb Boyer, Peter Caisse and Justin Walgran on February 1st, 2021

In December, we learned about planning five years of a project all at once, superpowered performance debugging with tracing, and tracking down the one bad part of gigantic single line JSON documents with jsonlint.

Software Engineering

Using the Dedupe Machine Learning Library for Cleaning and Matching Data

By Justin Walgran on August 30th, 2019

To deal with issues of apparel facility list data quality and scale quickly and efficiently we need a machine learning tool that can capture the knowledge of domain experts, find commonalities in jumbled text, and confidently compare large lists without the need to compare each individual entry.

Software Engineering

Building delightful, draggable iOS annotations for OpenTreeMap mobile

By Justin Walgran on July 12th, 2012

The iOS MapKit framework makes it easy to mark a point on a map, but making a draggable annotation that...