Tag: ArcGIS API for JavaScript

ArcGIS API for JavaScript Version 3.12 Released

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Version 3.12 of the ArcGIS API for JavaScript is now available! Below is an overview of the release including new features, enhancements, and changes included in version 3.12.  For a complete list with API enhancements and bug fixes, check out … Continue reading

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Web AppBuilder for ArcGIS (Developer Edition) Is Here!

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Earlier this month Web AppBuilder was released with ArcGIS Online and the Portal for ArcGIS extension to ArcGIS for Server, allowing users to build powerful GIS apps that run on any device! Now with the release of the Developer Edition, … Continue reading

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Data Visualization with ArcGIS API for JavaScript: Show Data by Size

When there are a bunch of numbers you want to visualize on map, in addition to the previously introduced show data by color approach, another popular technique is to show data by size. This technique is also called proportional symbol in cartographic context. In this blog post, you will learn how to create a sized-based visualization app with the ArcGIS API for JavaScript, and some tips that help optimize the information presentation in your app.
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Data Visualization with ArcGIS API for JavaScript: Show Data by Color

Mapping data values by varying the color has been the most popular way to visualize geospatial data. Academically it is called choropleth by cartographers. If you do an image search for “US population map” online, 90% of the results would be choropleth maps. In this post, we will look at this well-known mapping technique, and learn how you can create a map with our contemporary, easy-to-use API.

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ArcGIS API for JavaScript Version 3.11 Released

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Version 3.11 of the ArcGIS API for JavaScript is now available! Below is a listing of 14 new features, enhancements and changes included in this release. For a complete list with API enhancements and bug fixes, check out the What’s … Continue reading

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Data Visualization with ArcGIS API for JavaScript: Enhancement Options

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In the previous posts, we already learned how to display your data, and how to style your data by unique value with JavaScript API. You might feel content with simply displaying data on a map, but your audience may expect something beyond this. Where can they find the legend? What if they want more information about each feature on the map?

In this post, you will learn how to:

  • Use pop-up to provide additional information
  • Add legend
  • Trigger actions when a graphic is clicked

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Data Visualization with ArcGIS API for JavaScript: Show Data by Unique Value

In the first post of this series, I mentioned a good way to determine which way to visualize your data is to ask questions about the purpose of the map. In addition to “where things are,” which we already examined in that post, you may also want answer questions like:

  • What chain does each restaurant belong to in my city?
  • What is the most predominant crop of each county in the US?
  • What level of crime risk does each census tract have?

Unique value renderer is good for answering your what questions.

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Data Visualization with ArcGIS API for JavaScript

In the past year, we added some powerful, innovative, easy-to-use graphic drawing functionality in the ArcGIS API for JavaScript. Along with existing capabilities of the API, now you can easily create effective data visualizations on the map with a few lines of code. In this blog series, we will walk through various visualization capabilities in the API, and learn how you can utilize them to visualize your data.
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ArcGIS API for JavaScript Version 3.10 Released

Version 3.10 of the ArcGIS API for JavaScript is now available! Below is a complete listing of new features, enhancements and changes included in this release. The same information is available in the What’s New in 3.10 page in the SDK.
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Impact Summary: Dazzle Them With Your Data

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Esri’s Disaster Response Program helps support worldwide incidents, such as earthquakes, floods, wildfires, and severe weather. To increase public knowledge of the disaster impacts, we wanted an app to highlight areas and show related statistics, such as data that shows … Continue reading

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