Tag: ArcGIS API for JavaScript

Improved TypeScript development with ArcGIS API for JavaScript

The TypeScript declaration file for the ArcGIS API for JavaScript contains type information specific for the API. You can learn more about how to install this file from the TypeScript set up guide page or on GitHub.
Continue reading

Posted in App Developers, Apps, Developer, Web | Tagged , , , , , | Leave a comment

Making Better Promises

This blog post will discuss a change to our implementation of promises, a change towards making a better promise. Numerous classes in the ArcGIS API for JavaScript resolve to promises. This is the case for WebMapWebSceneMapViewSceneViewBasemapGroundLayers, and LayerViews.

Typically, you would use the then() method to be advised when one of these objects is ready to be used. In fact, many samples in the ArcGIS API for JavaScript SDK use then() on a MapView or on a SceneView to wait for the view to be ready before executing the rest of the application code.
Continue reading

Posted in App Developers, Developer, Web | Tagged , , , , , , , | Leave a comment

ArcGIS API for JavaScript versions 4.6 and 3.23 released

3D_measurement

Just in time for the new year, Versions 4.6 and 3.23 of the ArcGIS API for JavaScript have arrived, bringing new capabilities such as a directions widget, 3D measurement widget, and layer refresh. Here are some of the release highlights you’ll … Continue reading

Posted in App Developers, Developer, Web | Tagged , , , , | 3 Comments

Creating a custom tile layer with TypeScript

blog_ts_blendlayer_featured

The ArcGIS API for JavaScript provides you with many different layer types that support various data types and visualizations. We also provide you with the building blocks for creating your own custom layer types. These are BaseTileLayer, BaseDynamicLayer, and BaseElevationLayer … Continue reading

Posted in App Developers, Apps, Web | Tagged , , , , | 4 Comments

Unwinding the Clock: Visualizing Time with Arcade

7-earthquakes

Recording times and dates can be invaluable during the data collection phase of a project. Date data help us answer questions like, “When did this incident occur?”, “How long did it take to accomplish task A?”, or “What assets are … Continue reading

Posted in App Developers, Apps, Developer, Web | Tagged , , , , , , , , , | Leave a comment

Web AppBuilder for ArcGIS v2.6 Developer Edition Now Available!

NewLogoJune2017

FYI: Web AppBuilder for ArcGIS v2.6 Developer Edition is now available for download from the ArcGIS Developer’s Site.

Posted in App Developers, Apps, ArcGIS Enterprise, ArcGIS Online, Developer, Mapping, Uncategorized, Web | Tagged , , , , , , | 3 Comments

Thematic point clustering for data exploration

Clustering in the ArcGIS API for JavaScript is enabled outside the renderer, so clusters retain renderer properties and summarize the variable of interest on a cluster-by-cluster basis. In the example above, New York City 311 calls are visualized by the time of day each incident was reported. Cluster colors indicate the predominant time of day incidents were reported among features comprising the cluster.

Extracting meaningful information from large or dense point datasets can be challenging. Sometimes many points aren’t visible because they’re stacked on top of one another. Some datasets contain sparse data in some locations, but very dense data in others. Visualizations … Continue reading

Posted in App Developers, Developer, Web | Tagged , , , , , , , , , , | 3 Comments

Speed up your JavaScript development with autocasting

livebythecode

In the 4.5 release of the ArcGIS API for JavaScript, autocasting support was expanded to all renderers, symbols, and symbol layers. This means that symbols and renderers can be created programmatically without importing their modules. All you need to do … Continue reading

Posted in App Developers, Developer, Web | Tagged , , , , , , , | 1 Comment

FeatureLayer rendering: taking advantage of WebGL in 2D

webgl-featured-image

The 4.5 version of the ArcGIS API for JavaScript allows users to opt in to rendering FeatureLayer with WebGL (beta) in 2D MapViews. This is a major step in improving the overall performance of FeatureLayer, providing you with the ability … Continue reading

Posted in App Developers, Developer, Uncategorized, Web | Tagged , , , , , , , | 6 Comments

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. Continue reading

Posted in App Developers, Developer, Web | Tagged , , , , | Leave a comment