Getting to Know Web GIS. Pinde Fu

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      Smart mapping aims to provide a strong, new “cartographic artificial intelligence” that supports map styles including a heat map, color map, size map, point map, color and size map, time map, predominance map, and more.

      Smart mapping enables users to visually analyze, create, and share professional-quality maps easily and quickly with minimal mapping knowledge or software skills. Smart mapping uses a data-driven workflow to provide new and easy ways to symbolize your data and suggest the “smart” defaults. Smart mapping delivers continuous color ramps and proportional symbols, improved categorical mapping, heat maps, and new ways to use transparency effects to show additional details about your data via a streamlined and updated user interface. Unlike traditional software defaults that are the same every time, smart mapping analyzes your data quickly in many ways, suggesting the right defaults when you add layers and change symbolizing fields. The nature of your data, the map you want to create, and the story you want to tell all drive these smart choices.

      Smart mapping doesn’t just style your layer. It also performs exploratory data analysis to help you and your users discover the science of where. Smart mapping does not oversimplify the map-authoring experience or take control away from you. You can still specify parameters manually to extend default capabilities. For more information on smart mapping, see http://www.esri.com/landing-pages/arcgis-online/smart-mapping.

      Pop-ups

      Pop-up windows are considered windows to show geographic information and deliver geographic insight. They are a common tool that your end users rely on to interact with your operational layers. Today’s users click or tap a location or feature on the map and expect to see a pop-up showing more information.

      The default pop-up appearance for a layer is a plain list of attributes and values. You can configure the pop-ups to show custom-formatted text, attachments, images, and charts and links to external web pages. These pop-ups enhance the attributes associated with each feature layer in the map and present the information in more intuitive, interactive, and meaningful ways.

      ArcGIS Arcade

      How do you display data when there is no column in the schema containing that data? Traditionally you would have to alter the underlying data, such as adding a new column. But if you are not the owner or don’t have the privilege, you can’t alter the data. Arcade solves this common problem. Arcade is a portable, lightweight, and secure expression language written for use in the ArcGIS platform to style layers, label layers, and add values to layer pop-ups. With Arcade, you can build custom expressions based on existing fields and geometries without having to alter the data. Here are a couple simple examples:

      You can almost think of Arcade as “Microsoft Excel for ArcGIS.” In much the same way that Microsoft Excel lets you write formulas to work with spreadsheet data, Arcade lets you do the same with layer attributes and geometries. Like other expression languages, it can perform mathematical calculations, manipulate text, and evaluate logical statements. It also supports multi-statement expressions, variables, and flow control statements. Arcade was designed specifically for creating custom visualizations and labeling expressions in the ArcGIS Platform, including ArcGIS Online and ArcGIS Enterprise.