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I often struggle to find high resolution polygons for things that tend to change, like water, urban, ice, whatever. Here’s how you can wrangle some up-to-date, detailed, water polygons for your small or medium scale maps (plus five different ways you can style them up)… Here’s the gist… 0:00 Large scale vs small scale0:42 Sentinel-2 Land …
a year ago

More from Adventures In Mapping

Women in GIS Workshop

If you aren’t doing anything else on the allotted 2.5 hours of January 24, 2025, then consider tuning in to this Women in GIS workshop where I’ll share the process (and all the data and documents) for making this migration map. The cost is free, unless you count the 2.5 hours of life you’ll invest, …

a month ago 45 votes
How to make this drought map in ArcGIS Online

Here’s how to make the drought map used in the Drought Aware app. This video covers creating a custom imagery basemap, modified to best support thematic data, and a styling method for the overlain drought polygons so they tint the imagery a color based on severity and have a cumulative shadow appearance to give a …

a month ago 52 votes
Three Maps & the Truth

You may have heard that “all maps lie” and that’s right (also, here’s some required reading). Each map is a collection of compromises, whether they’re geomatic (your projection and scale choices), editorial (your choice of subject and what you’ve chosen to show and not show), and thematic (how you choose to show quantitative information). There …

a month ago 59 votes
Make these ornaments please

It’s that time of year when geographers the world over gather together in, let’s be honest, just slightly awkward office holiday parties. We dedicate 82-86% of our mental capacities to socializing with our colleagues over deserts and drinks, while the remaining 14-16% remain lasered right in on the massive geoprocessing task that is currently running …

a month ago 42 votes
GIS Day 2024

They say it’s the mappiest day of the year, but here’s a short video we made for GIS Day way back at the mappiest place on earth (aka the Esri User Conference) back in July! November felt like forever away, but you know how all that goes. Thanks to Jo Ann Prichniewski for coordinating, Christie …

2 months ago 53 votes

More in cartography

Going Live

I know it’s short notice, but I wanted to let you all know that I’m doing a livestream tomorrow. It’s been well over 2½ years since my last one. I’ll be covering a few monochrome maps I made for an upcoming book. Please come on by to ask questions, offer feedback, and share your thoughts … Continue reading Going Live →

3 days ago 6 votes
Old World Language Families

This isn’t a map, though there are small maps embedded, but an awesome graphic using the tree metaphor to detail the spread of languages. The size of the foliage represents the approximate population of speakers of each language. The graphic contains Indo-European and Finno-Ugric families so while it contains much of the world’s population, it does not include African, East Asian, Middle Eastern or indigenous languages. The author, Minna Sundberg is Finnish so there is extra attention given at the bottom of the map to the Finno-Ugric tree (detailed below) and North Germanic branch of the Indo-European tree. -via Mappenstance

4 days ago 8 votes