ArcGIS API for JavaScript versions 4.5 and 3.22 released

Version 4.5 of the ArcGIS API for JavaScript adds some key capabilities and several smaller (but sweet) enhancements that will come in handy. Here are the highlights in 4.5 (as well as 3.22); a full overview detailing new features can be found in the release notes.

Fast feature layers: Interact with more than a million features

Now you can display more data and dynamically visualize features more rapidly, such as this layer with more than 1 million building footprints. This is achieved by enabling the WebGL option (beta) now available for FeatureLayers in a 2D map.

FeatureLayer will be rendered with WebGL by default in a future release.

Drawing: it’s here!

You now can enable drawing in your 4.x apps. In this initial release of sketching tools, you can sketch new geometries in a 2D map. Full support for drawing and editing will become available incrementally in future releases, which will include the following:

Check out this new sketching sample and play around with the current capabilities.

OGC enhancements

WMS and WMTS layers can now be visualized in a 3D scene. Also, KML support has been added for 2D maps. Support for KML in 3D scenes will be available in a future release.

New options for vertical placement of 3D objects

The vertical placement of buildings and other 3D Objects can be set using a field value, z-value, or an expression. An example of when this would be useful is when placing objects that are either below ground or are flying above ground.

Clustering with version 3.22

If your map has a layer with a large number of points, configuring point clustering makes it easier to visually extract information from your data. When you enable clustering, point features within a certain distance are grouped into one symbol. You can enable clustering in your JavaScript app using either of the following methods:

Clustering is currently only available in version 3.22, but will be added to 4.x in early 2018. This blog discusses how clustering enables data exploration.

There’s more…

Explore the release notes and new samples to learn about more updates such as support for vertical coordinate systems, pop-up improvements, and time-saving enhancements such as expanded autocasting support.

Version 4.5 release notes
Version 4.5 samples
Version 3.22 release notes
Version 3.22 samples

About the authors

Kristian is a Principal Product Engineer at Esri specializing in data visualization. He works on the ArcGIS Maps SDK for JavaScript, ArcGIS Arcade, and Map Viewer in ArcGIS Online. His goal is to help developers be successful, efficient, and confident in building web applications with the JavaScript Maps SDK, especially when it comes to visualizing data. Prior to joining Esri, he worked as a GIS Specialist for an environmental consulting company. He enjoys cartography, GIS analysis, and building GIS applications for genealogy.


Julie Powell is a Principal Product Manager, focusing on Esri's web development technologies. She works to ensure developers can be successful in building state of the art, purposeful solutions using ArcGIS software. Julie brings 20 years of experience working with global leaders such as Hewlett-Packard and Esri, delivering a variety of software solutions for both the enterprise and consumer markets. Julie has worked on a wide range of projects and consulting endeavors, including serving as technical lead for web mapping solutions for strategic customers.


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