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Wednesday, May 23 • 11:30am - 12:00pm
Displaying theme layers and gathering usage information in an ArcGIS Web AppBuilder (WAB) app

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Pierce County Spatial Services has developed a new public-facing web app, PublicGIS (https://matterhornwab.co.pierce.wa.us/publicgis) based on ArcGIS WAB.

One new function is that the app offers several themes. Each theme consists of a group of related layers that deliver a message such as crime information or land development considerations. Unlike layers in a table of contents (TOC), layers of a theme are added to the map on-the-fly when the user selects the theme. This allows us to efficiently manage many related layers without affecting categorized layers maintained in a specific order in the TOC.

To maintain GIS data efficiently, we need to gather information on usage, such as how many times layers and reports have been viewed. Each map navigation activity such as pan and zoom counts as a request of the map service, so using vendor-provided map service analytics does not provide a realistic measurement of use. We have found that Google Analytics (free version) can track both apps and events, which allows us to exclude map navigation activities. By selecting a time-period of interest in Google Analytics we generate a report of usage information. We also use Python to count how many reports have been downloaded.

Using these methods we are exploring how we would serve spatial information in response to current local events and gather valuable usage data to keep our GIS data and applications relevant and responsive.


Yunsik Choi

GIS Programmer, Pierce County IT
GIS Programmer/Engineer2 at Pierce County

Wednesday May 23, 2018 11:30am - 12:00pm AKDT