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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 …
6 months ago

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More from Adventures In Mapping

Make a cross stitch style map in ArcGIS Pro

Yes, yes, maps are spatial communication devices and we can obsess over precision and clarity. But it all depends on your map’s purpose. Maps are also designed objects so they can carry within them the power of sentiment. Memory, joy, nostalgia. Or just plain old wonder and curiosity. Here’s how you can create a charming …

3 weeks ago 10 votes
van Gogh style wind map

Here’s how to use compositing to tint flowing wind patterns by underlying terrain colors. Why? Because rather than a basemap providing some context around a layer that inherently blocks your view of it, you can leverage the amazing compositing blend modes of the ArcGIS Online Map Viewer to make the phenomenon reveal context rather than …

a month ago 10 votes
Hack some bokeh into your ArcGIS Online map

You know how you can crank up the sense of drama and studio photography professionalism by switching over to portrait mode on your phone’s camera? It just looks…cool. The subject is in focus and the peripheral background content is blurry. It’s actually how our eyes and brains work, so it’s pleasing to see in photography. …

2 months ago 34 votes
Inner Glow Effect for Polygons in ArcGIS Online

Sure, there’s a glorious drop shadow effect in the ever-more-capable ArcGIS Online Map Viewer to give features a sweet glow, BUT there’s no inner glow effect. How do we cast that beautiful glow inward? I’ll admit that I’ve been stumped by this one for longer than I care to admit, but then it just hit …

3 months ago 36 votes
Make a seafloor map in the spirit of Marie Tharp & Heinrich Berann

Here’s how you can make a map inspired by the glorious collaboration of geologist Marie Tharp and landscape painter Heinrich Berann. We’ll use ArcGIS Pro (injected with a special terrain toolbox provided by cartographer, author, and public figure Ken Field), its amazing raster functions and blend modes, and luscious bathymetry data from GEBCO. Let’s dive in! 0:00 a brief …

3 months ago 33 votes

More in cartography

When Ocean Currents Collapse
yesterday 1 votes
Medieval Murder Maps

Medieval Murder Maps is a project of the Violence Research Center at the University of Cambridge. Using data from the coroners of the cities of London, Oxford and York they have created maps showing the locations of murders in the 14th Century. Sadly the image above (from York) does not indicate death by pancake. That is merely the murderers name, though it makes for a great headline. The red icons indicate female victims or perpetrators while blue are men. here is a legend to translate the murder weapon, and incident type. London, unlike the other cities has a full menu of incident types. A click on an incident gives you more information. Unlike today, murders correlate more with areas of affluence and college students are frequently listed. In London there is a large cluster or murders on the western end of Cheapside (or Westcheap), an area of upscale clothing stores now. The background maps are from the Historic Towns Trust who create modern digital historic maps that represent the towns as they appeared at the time. For London, you can also switch backgrounds to see a map from Braun and Hogenburg, circa 1560. Credit to a recent Washington Post article for bringing this site to my attention. Explore on your own here.

a week ago 9 votes
The Real-Time 15 City Map
a week ago 4 votes
Canadian Provinces and U.S. States Economically Compared

As noted in the previous GeoCurrents post, Alberta is Canada’s most prosperous and economically productive province. But it does have, as might be expected, by the country’s highest cost of living. Although living costs in Alberta are above the national average, they are below those of Ontario, Canada’s most populous province. The major factor is […] The post Canadian Provinces and U.S. States Economically Compared appeared first on GeoCurrents.

a week ago 8 votes