Summer 2013

Making It Real

"Live by the Code"

By Monica Pratt, ArcUser Editor


This article as a PDF.

Jeff Jackson, who leads the applications development teams, emphasized that Esri builds applications using its own SDKs, or "eats its own dog food."

Jeff Jackson, who leads the applications development teams, emphasized that Esri builds applications using its own SDKs, or "eats its own dog food."

Tech, code, and people: Esri program manager Jim McKinney used those three words to summarize the Esri International Developer Summit (DevSummit), held March 25–28, 2013, in Palm Springs, California.

"It's about the tech—the technology, the products—as much as it's about the code. It's really about the people," he said at the start of the Plenary Session. "It's about you, real people, doing real things, that matter."

The nearly 1,600 attendees who came for the eighth annual event by developers, for developers, were the focus all four days. "You are the people who can think through what is needed and wanted," said Esri president Jack Dangermond. To that end, Esri shares its development strategies—both immediate and long term—and best practices for working with Esri development tools.

But DevSummit is more than a show-and-tell event. It brings those who develop with Esri technology face-to-face with those who develop it. Developers interacted directly with the more than 300 Esri software development staff who were available throughout the summit.

Attendees could show their skills at the Hackathon.

Attendees could show their skills at the Hackathon.

This year, the number of attendees who focused primarily on GIS development nearly equalled those who were mainstream developers. The balance of attendees indicated they were academics, managers, and business owners. More than a third of the attendees were from outside the United States, and nearly a third were first-time attendees. For those actively writing code, the majority use JavaScript, followed by Python and .NET.

The 2013 DevSummit packed a lot of activity into four days. The presummit hands-on workshops on iOS 6, Dojo, HTML5, JavaScript, and Python were sold out. Technical and user presentations dominated the agenda, which was supplied exclusively as a phone or tablet app. While sessions were shorter and more focused, there were 28 more of them this year. User presentations were voted on by the attendees.

Shorter and less formal tech transfer sessions continued into the evenings. In Speed Geeking, Esri staff gave five-minute presentations on various aspects of the technology to constantly changing groups of 8 to 10 attendees. Lightning Talks shared knowledge on a range of topics through rapid-fire presentations by attendees.

In formal presentations and informal discussions, the new generation of Esri technology was the underlying theme. As Dangermond observed, "This generation of our tools is—I'll just say the word—transformational, because it moves it into a new space, a platform space, and the opportunities are immense to be able to configure and take geography and geographic understanding everywhere."

Live by the Code

Making It Real Time

Esri technology for dealing with Big Data was a wildly popular topic at DevSummit. Esri technology evangelist Mansour Raad introduced the newly released GIS Tools for Hadoop, which deal with the volume, velocity, and variety of Big Data by taking advantage of cooperative processing between Hadoop and ArcMap to spatially analyze, visualize, and interactively query billions of records.

At ArcGIS 10.2, Esri will release ArcGIS GeoEvent Processor for Server, a new approach for helping discover the value of the flood of data being captured through sensor networks in real time. "There probably are more sensors in this room than there are people," said Adam Mollenkopf, the product lead for GeoEvent Processor, during the Plenary Session. "As a developer, leveraging these sensors in your applications can provide tremendous value to your end users."

The extension lets ArcGIS for Server ingest real-time data from data sources ranging from Twitter to Sierra Wireless devices using connectors. Because many of these connectors will be available on GitHub, they can be tweaked to meet specific needs, or the software development kit (SDK) can be used to create custom connectors.

Continuous processing and analysis are performed on events as they are received. The stream processing logic can filter streams based on event attributes or the current location of sensors inside or outside an area of interest. Output can be integrated with operations dashboards or custom apps created with any ArcGIS API or ArcGIS Runtime SDK to use real-time data for more immediate response.

The release of ArcGIS GeoEvent Processor for Server with ArcGIS 10.2 was announced. It employs a new approach for helping discover the value of the flood of data being captured through sensor networks in real time.

The release of ArcGIS GeoEvent Processor for Server with ArcGIS 10.2 was announced. It employs a new approach for helping discover the value of the flood of data being captured through sensor networks in real time.

Disconnected Productivity a Reality

Esri developer Euan Cameron outlined the evolution of the ArcGIS Runtime SDKs and APIs, another piece of the Esri platform. These are a common set of technologies deployed to the desktop, embedded in systems, and used on phones and tablets. With the next full release of the ArcGIS Runtime SDKs and APIs this summer, functionality of the core will increase so more can be done when devices are disconnected from the online infrastructure or local server.

Just what can be done with mobile devices at ArcGIS 10.2 was demonstrated by Esri Runtime SDK product engineer Will Crick. After accessing a map authored in the cloud using a modest smartphone, Crick put the device in airplane mode and then queried and edited data, performed reverse geocoding, and did some routing—all with the airplane icon prominently displayed on-screen.

How was this possible? Data and functionality were downloaded to the device as a geodatabase implemented using SQLite. In addition, if connectivity becomes available, the device can be synchronized with the cloud. "We're going to release this across all the Runtime SDKs at 10.2, and when we do that, we believe we're going to be the first mapping API that has this offline capability," said Crick.

Decisions, Decisions, Decisions

In his summit keynote, speaker Jared M. Spool observed that "the best products are made up of decisions, lots of decisions." How the design decisions that affect interface design are made was the topic of his speech.

The founder of the world's largest usability research organization, User Interface Engineering, analyzed numerous examples from the web to show how each demonstrated one of the five styles of design: unintended, self-design, genius, activity focused, and experience focused.

Conference diversions included a cake-decorating contest.

Conference diversions included a cake-decorating contest.

Over decades of studying how successful companies make design decisions, he has found that two design approaches—activity focused and experience focused—which are not based on rules or dogma—yield far superior results because in design work, "exception cases far outnumber normal cases. So you're always designing for exceptions. You're always designing for constraints. You're always designing for trade-offs. So this is key."

Knowing these patterns, design comes down to simply answering the question, What kind of designer do you want to be? "And I've got to tell you, none of this is rocket science. I can tell you it's not rocket science because NASA's one of our clients, and they have very strict rules as to what is rocket science. They have told us, 'This is definitely not it.'"

You Are the Button

Amber Case's Plenary Session talk on location and the future of the interface focused even more precisely on developing effective interfaces for GIS applications.

Case, former CEO of recently acquired Geoloqi and now head of the Esri R&D Center in Portland, Oregon, is deeply interested in the interaction of humans and computers. She noted that tools have evolved from being extensions of the physical self to extensions of the mental self. Unlike physical tools that retain the same size and function, mental tools are much less constrained and change form and function rapidly.

Buttons on the interface move, morph, and—increasingly—melt away. With the addition of locational awareness, buttons may no longer appear on the interface because the user becomes the button. The user's location triggers events. This makes interaction with the application far less intrusive because locational context lets the application anticipate the user's needs and wants.

In closing, Case said, "I'd encourage all of you to think a little bit wider—how you can solve real-world problems by adding locations and how you can actually bring more of what was formally stuck on the web as static content to life [by] assigning location to it and delivering it to where it actually is, where people actually are."

Starting Out Showing Off

True to the summit motto, "Live by the Code," the Esri DevSummit Hackathon kicked off festivities on March 24 at 1:00 p.m. With dinner and snacks provided, contestants toiled through the night in a large ballroom. They used the new ArcGIS for Developers website; Esri web and/or mobile APIs; and data from Riverside County, California, to come up with innovative location-based apps. The next day, weary competitors Christopher Moravec, Mara Stoica, and Ryan Colburn, creators of the Animal Spotter App, emerged as the winners and were rewarded with DevSummit passes. Michael van der Veeken and Paul Kaiser were second, and Christoph Sporri, Andry Joos, and Michael Faulcon were third.

Developers could also compete in another hackathon, the 100 Lines or Less ArcGIS JavaScript Code Challenge (ArcGIS.js <= 100) without setting foot in Palm Springs. The contest was run through GitHub, the web-based hosting service for software development projects. Phil Leggetter received a one-year subscription to ArcGIS Online with his winning entry. Stan McShinsky's was second, and Ognian Samokovliyski's was third.

Playing Hard Too

Good times, food, drink, and the famous Esri dodgeball tournament were on the agenda Wednesday evening. Much Ado about Balls topped 30 teams to win passes to next year's DevSummit. From a giant game of Jenga to a cake-decorating contest, attendees had a lot to keep them entertained throughout the evening.

After a few final technical sessions and the closing sessions, Esri staff and developers alike headed home after an intense four days with a better idea of how to work together more productively.

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