Tutorial
6 articles
Census API in Python: Pulling ACS Data With Validation Checks
A Python workflow for pulling ACS data from the Census Bureau API, with the validation checks that catch bad data before it reaches the analysis.
How to Validate GTFS Feeds Before Routing Breaks
A Python workflow for catching the transit data problems that structural checks miss. Six validation layers from download fallbacks to multi-agency sanity checks.
How to Build a Classifier When 94% Accuracy Means Nothing
A scikit-learn workflow for imbalanced classification, where 94% accuracy can mean nothing, and the evaluation metrics that actually matter for rare classes.
How to Interpret a Classifier with SHAP Values
A Python workflow using SHAP values to explain what drives a fraud classifier's predictions, and what SHAP importance does and does not actually measure.
Spatial Analysis with GeoPandas: From Joins to Autocorrelation
A spatial analysis workflow that starts with point-to-polygon joins and builds toward spatial weights, autocorrelation testing, and LISA cluster detection…
Transit Travel Time Matrix in Python (Free, No API Keys)
Compute transit travel-time matrices in Python with r5py, using free GTFS and OpenStreetMap data. No API keys, fully worked example.