Hazel Zhang Maps & data

            Docs

How the maps get made.

Methods, data sources, and the small techniques behind each project — written down so the work is reproducible, not magic.

              Start here

Reading a record

              Data

Sources & licences

              Pipeline

From CSV to map

          Guides

01Projections without tears
Choosing a CRS that won't lie to your reader6 min 02Cleaning administrative boundaries
Dissolving, simplifying, and keeping topology intact9 min 03Colour for data, not decoration
Building perceptually even ramps in OKLCH7 min 04Sonifying a dataset
Mapping values to pitch, time, and timbre11 min 05Printing a map that survives paper
Risograph separations and registration by hand8 min