Creating a predominance visualization with Arcade

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At the March 2017 Esri Developer Summit, Dave Bayer and I gave a presentation on how to use Arcade expressions in web apps built on the ArcGIS platform. In that presentation I demonstrated a succinct way to create a predominance … Continue reading

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NAIP 2016 Image Layer is Now Available

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Did you know that Esri hosts a set of image layers with recent 1m (or better) resolution, multispectral imagery for the continental United States?  The Living Atlas includes a set of NAIP image layers hosted by Esri and these layers … Continue reading

Posted in ArcGIS Online, Imagery, Mapping, Sciences, Uncategorized | Tagged , , , , , , , , , | 1 Comment

Web map zoom levels updated

By Aileen Buckley, Research Cartographer

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Quite some time ago, I wrote a blog post about the zoom levels used for web maps. Since these have been expanded to include even larger scales, I am updating them here. There are now 23 levels that range from a global scale (zoom level 0 at about 1:591,000,000) to a local scale (zoom level 23 at about 1:70). Continue reading

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Using Kotlin Android Extensions with ArcGIS Android

Google just recently announced official support for Kotlin in Android so we can now take advantage of techniques to enhance the development experience with ArcGIS Android.  One way we can do this is through the use of Kotlin Android Extensions.

Accessing View Resources

In Android Java, once you provide resources in your app, e.g. a MapView, you can apply it by referencing its resource ID which are defined in your projects R class that is automatically generated.  You can access resources in code by passing a resource ID as a method parameter.  For example, you can access a MapView using findViewById:

MapView mapView = (MapView) findViewById(R.id.mapView);

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Shared Theme Gallery Examples

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Shared Theme was introduced in the March release of ArcGIS Online.  It is an administrative setting that allows organizations to easily apply a consistent theme to configurable web applications. If you missed all the details about Shared Theme, take a … Continue reading

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ArcGIS Online Organization Configuration Tips

ArcGIS Online

There are many ways to configure and administer an ArcGIS Online organization and each method will be unique to that organization’s needs. This blog will point out some best practices and workflows frequently recommended by Technical Support to further streamline … Continue reading

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The Author, Contractor and some Managers: A Tale of Roles and Privileges

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What do submarine sandwiches and ArcGIS Online have in common? They’re better with custom roles. What a knee slapper?!? Custom roles are a helpful tool that enable administrators to fine-tune the capabilities and levels of access that their ArcGIS Online … Continue reading

Posted in ArcGIS Enterprise, ArcGIS Online | Tagged , , , , , , | 6 Comments

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

Improvement Ratio map example

An interesting way to look at a community is to map various measures of the value of its parcels, including a measure called the improvement ratio. Many cities, but not all, tax their parcel owners based on the value of … Continue reading

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Interesting and Absurd Uses of Digital Elevation Models

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At the 2017 Esri User Conference, Ken Field will dazzle you with an array of beautiful techniques and examples of Relief Representation. I’ll be there, too, as the peanut gallery, tossing in strange, maybe useful, sometimes ridiculous, examples of Digital … Continue reading

Posted in Analysis & Geoprocessing, ArcGIS Pro, ArcMap, Cartographic Design, Geodata, Hydro, Imagery, Mapping, Oceans & Maritime, Open Data, Sciences, Story Maps, Uncategorized | Tagged , , , , , , | 2 Comments