ArcWatch: GIS News, Views, and Insights

August 2016


Less Can Be More

Why It's Smart to Use One Web Map When Creating a Story Map Series or Story Map Journal App

By Owen Evans
Esri Solution Engineer

Story Map Series and Story Map Journal from Esri are popular apps that are used to tell stories using web maps, images, videos, and other dynamic content. Both apps let you use the same web map in multiple sections or entries. You also can change the appearance of a web map by turning layers on and off.

You may wonder whether it is better to make different web maps for each section of your story or combine all layers into a single web map. The best option: use one web map with these Esri Story Map apps.

Set a custom configuration for Content to toggle layer visibility in a story map section.
Set a custom configuration for Content to toggle layer visibility in a story map section.

Why? First, using a single map keeps your authoring experience simple. There's only one web map to modify when you need to make changes to symbols or pop-ups in one of the layers. And if you need to move your story map from one folder to another, there are fewer items to move to ensure all components of your story map are in the same place.

Which Story Map Journal content is easier to manage?
Which Story Map Journal content is easier to manage?

Second, using fewer web maps also helps your app perform better and provides your audience with an improved user experience. Each web map you load into the app consumes memory and other browser resources. So the more web maps you use, the more memory your app will consume. By creating a single web map with multiple layers and using a custom configuration for each section and/or main stage actions to toggle layers, you can improve the app's performance.

Plus, when you use a single web map and toggle the visibility of layers in your story map builder, the main stage doesn't have to reload when switching sections, so your story map viewers will see a nice, smooth transition between maps. The reload time is usually not very long, but eliminating it altogether improves your story.

So while it's not necessary to combine all your layers into a single map when you create a Story Map Series or a Story Map Journal app, doing so, when possible, will improve the experience for your readers and reduce the number of items in the story map that you need to manage.

Note: There's an exception to the suggestion in this article. If you end up with more than 10 vector tile layers in the same map, you should create separate web maps for each section of your story.