Jim Herries
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Jim Herries is a geographer with Esri in Redlands, California. He serves as a principal product engineer on the team responsible for ArcGIS Living Atlas of the World. Jim is particularly engaged in thematic mapping and map visualizations, reflecting a drive to help GIS users bring their data to life on the map and stimulate insights. He constantly looks for ways to create clear, focused map information products that incorporate meaningful spatial analysis and evocative visualizations.

Posts by this author
Size maps get turbocharged in Map Viewer

Above-and-below styling, binary color schemes, rapid presets, and other enhancements have come to proportional symbol maps

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Explore before you map

Learn some easy tips for the start of your cartographic journey. Start each map with a few minutes of exploration to learn more about your data.

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Blend Modes for Thematic Maps

This blog focuses on blend modes that improve your thematic maps, especially for maps of polygon layers.

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Improve Your COVID-19 Cases Map

Does your map show the growth in cases, as well as the flattening? A tutorial shares how to make improvements that require less maintenance.

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Coronavirus COVID-19 Data Available by County from Johns Hopkins University

Johns Hopkins University is now providing data in a map layer by county for COVID-19 cases and deaths.

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Clustering now available in Map Viewer

Uncover hidden patterns in your data with clustering in Map Viewer.

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New color ramps in Map Viewer

Color theory, perceptual differences, and cartographic influence behind the new color ramps.

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Better Breaks Define Your Map’s Purpose

The purpose of this blog is to discuss how a typical thematic map of a percentage comes into focus and how you give it purpose.

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Use Arcade Expressions to Map the Land to Improvement Ratios in Your Area

An interesting way to look at a community is to map the value of its parcels, including a measure called the land to improvement ratio.

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