Tag: jsapi4

Creating a custom tile layer with TypeScript

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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

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Unwinding the Clock: Visualizing Time with Arcade

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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

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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

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Speed up your JavaScript development with autocasting

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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

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FeatureLayer rendering: taking advantage of WebGL in 2D

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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

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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

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React Redux: Building Modern Web Apps with the ArcGIS JS API

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I would like to share my experience building a React Redux app with the ArcGIS API for JavaScript (ArcGIS JS API). It is exciting how well these work together. I will also share some boilerplate source code to help you … Continue reading

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Mapping art in 3D

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I regularly check the Open Data portals because there’s always some new, interesting dataset out there. Recently, I stumbled upon data of independent art galleries in New York City on the NYC OpenData portal and decided to create a scene with them. I … Continue reading

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Exploring 3D object data in a custom web app

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In a session titled 3D Visualization with the ArcGIS API for JavaScript at the 2017 Esri User Conference (UC), Javier Gutierrez and I demonstrated some of the new visualization capabilities available in the JavaScript API. I’m particularly excited about Smart … Continue reading

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Manhattan Skyscraper Explorer – when Open Data and ArcGIS API for JavaScript meet

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Open data is an awesome thing nowadays. It’s amazing how many organizations publish their data to allow citizens to learn more about the city they live in. Examples of such datasets are the New York 3D city model and the Housing … Continue reading

Posted in 3D GIS, ArcGIS Online, Cartographic Design, Developer, Mapping, Open Data, Web | Tagged , , , | 4 Comments