120 Hours in the Python’s Den: PyCon 2011

Starting in Version 10, Python is the de facto geoprocessing scripting language for the ESRI suite of software.  I primarily use python to automate the data processing work I perform.  I also use Python to create geoprocessing scripts for the ArcServer environment.  This year I attended PyCon, the Python languages community convention, to further develop my Python skills and see how others are using this powerful language.

I started my excursion to Atlanta for PyCon with three questions in mind:

1)      How can I utilize the multiprocessing capabilities of the python language?  What obstacles have others faced in implementing this functionality with ESRI’s ArcPy package?

2)      I would like to create intuitive input dialogs for my geoprocessing tasks.  How can I leverage other GUI frameworks (Qt, TK, wxPython) to create input dialogs with more built in functionality?

3)      How can we utilize the cloud to reduce the time for complex and time intensive geoprocessing tasks?

I took four classes to start the conference: Python 101, Google App Engine, Creating GUI Applications in Python using Qt I, and Deploying web applications to the cloud.  I learned a few cool tidbits from these four classes.

  • The print statement will be replaced with a print function in Python 3.  Syntactically this change makes a lot of sense.  In case you are wondering, you can actually backport this functionality into the Python 2.6 that comes with Version 10.  Quick code sample:


# Old

>>> Print “%s is a very fun language for %s” % (‘python’, ‘geoprocessing’)

# New

>>> Print (“{0} is a very fun language for {1}”.format(‘python’,’geoprocessing’))

>>> Print (“{langauge} is a very fun language for {task}”.format(language = ‘python’, task = ’geoprocessing’))


  • Google App Engine is cool, but I do not have a reason to use it yet.  I feel in the future, using this service, I will be able to quickly stand up a site without having to worry about infrastructure.
  • Qt can run on almost everything and every operating system.  This is a huge plus, however I am going to hold judgment until the dust settles with Nokia.
  • In a little under three hours I was able to setup a distributed, load balanced django application on the Amazon Cloud pulling data from their Relational Database Server and distributed using their CloudFront CDN.  I definitely see this as a resource I will invest more time in learning.

It is amazing to see what people are doing with python, primarily in the distributed computing and web application end of the python development spectrum.  My new goal for the year is to finally get around to learning to develop with Django.  It seems every other presentation was a huge django proponent.  There were also a few interesting talks on the forecast of Python language development and IDE’s for writing your code. Fortunately, for you the Python Foundation videotaped most of the presentations this year, http://pycon.blip.tv/posts?view=archive.

Alright and onto a few takeaway lessons I learned from my experience at PyCon.

  • ESRI is investing tons of resources into building Python as a quick, efficient geoprocessing language for their tools.  PyCon ran concurrently with ESRI’s developer summit; however, they were still able to send out 7+ representatives to PyCon.  I spent a couple nights with the ESRI folks, and to be honest I am incredibly pumped about version 10.1.  Tons of cool new features are coming down the pike.
  • Microsoft is gradually pushing into the Python/Open Source community.  I am in the process of downloading Microsoft’s Python extension for Visual Studio.  The latest and greatest release promises to debug both cPython (what ESRI uses) and IronPython (a .Net variety).  Currently I am using WinPython, the default with ArcGIS, but I see the Visual Studio version quickly superseding its use.
  • The python community could learn a lot from the GIS side of the house.  Almost every presentation involved crunching data, processing it in some way and displaying it graphically.  I definitely see an opportunity to step in and show a more intuitive method for displaying spatial data.

Augmented Reality using ArcGIS and Layar

Check out Patrick Barnhart’s presentation from the Developer Summit on ArcGIS and Layar: http://resources.arcgis.com/gallery/video/arcgis-for-ios/details?entryID=CA9F541A-1422-2418-88FA-E7DAC681E831

Esri Developer Summit: Closing Thoughts

Dan Levine

Well the 2011 Dev Summit wrapped up with a bunch of folks walking around with sore arms from the dodgeball tournament and you could tell Jim McKinney was disappointed his team wasn’t  in the finals. As has been the pattern over the last 6 years, Esri raises the bar a little bit each year making this better and better. The sessions we better, they were nimble in moving rooms around to accommodate crowds, and the food was better.  This is by far and away the best technical show they offer, and with the direct access to the product teams, it really is a must attend.

One of the big observations I have from the show overall is that we as an industry are still trying to figure out the mobile market and how to provide Enterprise solutions in that space. What I saw was a lot of sessions on “how to” with iOS or Android or Windows Mobile, which were well attended and necessary. But I am starting to suspect that the attendance in each of these was largely along personal favorites (iOS, Android, Windows Mobile) and perhaps not so much on need.  I was surprised at the low attendance at the couple of sessions about how to pick which one is appropriate or if you want to do multiple platform deployments, how do you decide.  Esri actually did a real nice job in these sessions.

Trying to put that observation or perception in context of the Keynote speakers point that the mobile market is incredibly fragmented right now, and the end users are demanding solutions working on multiple platforms is where I am struggling.  Are we as technologists still so caught up in the coolness factors of each of the individual platforms and the Marketing hype that drives separation (mine is better than yours) that we aren’t seeing the bigger picture? Or is it that we are still in the early part of the technology curve where we have to understand each of the technologies first then figure out how to tie them together?  That is not to say that there aren’t tools that allow us to start doing just that; it just seems like these are just getting out of the gate.

During the week before the Dev Summit I must have received 2 emails a day from some vendor, integrator, or techno think tank group offering to help me as a CTO figure out what my corporate mobile strategy was going to be.  This is obviously a big emerging problem for corporate IT departments that we need to be smart about. Do they standardize on a single platform (a strategy our friend from Gartner would seem to indicate is doomed), do they allow, and therefore have to support, multiple platforms across their IT infrastructure, or do they create some sort of Enterprise Mobile Service BUS that abstracts the layer between core IT systems and whatever mobile platform you want?

Hmmm, that last one sounds a lot like the AGS Server architecture model, and by the way the same model that the run time solution is going to follow……..

Okay slight change of topic, but still related.

So I have heard a little bit about the QT development environment in the last month or two. It’s always around developing cross platform solutions for mobile phones. It has just started to show up as one of the last bullets on Esri slides about developing multi-platform solutions in mobile. But for the first time I see that Esri has fully embraced this as part of a product line in the development of SDKs for the run time solution they will release as part of 10.1. On digging into the resource center, I am seeing a modest amount of whitepapers- like instructions and getting started material for using Qt for engine development- in 10.x. Man how do you keep up with all of it!

Qt is a cross-platform application and UI framework. Using Qt and C++, you can write web-enabled applications once and deploy them across desktop, mobile and embedded operating systems without rewriting the source code. http://qt.nokia.com/.  The guys presenting the run-time special session mentioned that it has been used for large scale enterprise solutions particularly when high performance is required.  Some of the real-time map refresh capability they showed during the demonstrations apparently will be available first with the Qt SDK and follow with the other 2 SDKs (JAVA and Silverlight WPF).  Patrick sat in a session for developing military solutions and they showed a Qt based application with military operations, moving maps, real-time comms, etc.  I was also a bit surprised at the show of hands during the run-time talk, apparently there are a bunch of C++ developers in attendance. I don’t remember seeing that represented much previously.

Well over the next couple of weeks I will be doing a lot of thinking about what we saw this week and trying to figure out what it means to the industry and what we as a company want to invest in. Already looking forward to next year and what we can do until then.

Steve Mulberry

The Dev Summit came to a close today but not without its share of informative sessions. I sat through one this morning that made me think more about the comment, “ArcGIS Desktop is not meant for the web”.  We keep hearing how GIS is moving to the web with the many open API’s, free templates, tools for hosting and managing data,  applications, etc. I also hear Esri and others say, “Desktop will always be around and there’s no way you can do the things in desktop over the web”. Not so fast; in the last year or so we’ve seen BA Desktop become BA Server with an open API, and then evolve into BA Online.

This opened the door for Community Analyst.

Early this year we saw ArcLogistics desktop become web enabled.

Now I learn that the desktop redistricting tool we’re all familiar with has moved to the web.

Each one of these tools is arguably a full featured GIS with editing data, analyzing information, map production, and dissemination. What’s next, an online property management system? Desktop over the web…not such a pipe dream any more.

Patrick Barnhart

I’m sitting in the airport on my way home from the summit and it seems a good time to wrap up.  It’s been a great week but it’ll be nice to get home.  I’ve taken in so much stuff that it’s starting to blur together but since this will be my last post for a while, I thought I’d focus on a task that’s common to a lot of the projects going on at GISi – printing high quality maps from a web application.  I mentioned this one on day 3 and promised to attend some sessions on Python to learn a little more about it since that seems to be the easiest way to go about printing to a PDF from ArcGIS 10.

Python has been part of ArcGIS since release 9 and has been successful enough that support for it has been increasing with every release until now, at 10.1, it is fully integrated into the application – intellisense, code completion, and integrated help; they’ve even added a Python console to the main interface and gave it a name – ArcPy.  I’ve messed with Python before, mainly by creating tools using Model Builder and exporting them to scripts that I could modify, but I’ve always used it inside of ArcMap, which isn’t very helpful when it comes to printing from the web.  One of yesterday’s sessions entitled ‘Using Geoprocessing Services in a Web Application’ showed me that there’s a lot more that can be done with it, and the follow up sessions I attended on Python make it look pretty easy.  Python is a very clean, easy to read language, and while I’ll have to learn a new syntax, it looks fun.

Okay, so we all know you can publish a Geoprocessing task through ArcGIS Server and make it available to other ArcMap users via the toolbox.  What I didn’t know, or at least hadn’t really focused on before, is that you can also access these tools via REST.  As we’ve seen in my previous posts, there’s a number of ways to make REST call to ArcGIS Server, either directly using a URL from a back end web service or from the front end using one of the Web APIs (JavaScript, Flex, Silverlight).  Any of these will work; I haven’t done much Flex or Silverlight, but me and JavaScript go way back, so that’s the approach that appeals to me.

As we should with all projects, let’s first define our scope.  What I’m after is the ability to allow the user to select a template from a list; this will set the locations of the map elements on the page, as well as the size and orientation.  So the title, legend, scale bar, north arrow, comments, etc will be placed where we want them to go so we can make a nice clean map that’s easy to customize if we need to adjust the template.  Then all we need to do is create the elements, put them in where they need to go, and output the whole thing into a PDF for the user to print at a high resolution.  Piece of cake, right?  If you’re doing it from scratch, maybe not so much.

ArcPy, however, makes things easier.  There are a ton of existing scripts that we can use and it has the ability to open an .mxd to access the layout and retrieve map elements based on their name.  For example, a text area named Title can be retrieved and populated by ArcPy with relative ease.  To do this, all I really need is to create layouts in ArcMap (one layout per .mxd, named appropriately so I can find them later) and make a JavaScript front end with a couple of menu items and a print button.  Esri is all about Dojo (some folks like JQuery, I’m more of an ExtJS guy), but it doesn’t matter as long as we use the JavaScript API to create a handler on the print button, we’re good.

Our handler needs to get the state of our map (extents, layers, etc) and the layout selected by the user, then make a REST call to a Python Geoprocessing tool that will do the work.  Of course, I haven’t actually done this part yet, but since we’re dealing with ArcGIS templates, there’s existing code we can use to generate the map and export the whole thing to a pdf.  The example I saw, which should be available on ESRI’s resource page in a couple of weeks if it isn’t up already, was only a couple of pages worth of code, and compared to how I’ve done this in the past using open source libraries like ITextSharp, it looked really simple.

So, as you can see, my head is still spinning from all the possibilities I’ve seen over the last couple of days, and want to play with all the new toys all at once, but the reality is there’s only so many hours in the day.  Hopefully I’ll get a chance to take a closer look at some of these things in the days to come and will pass along what I learn.  And finally, if you’re like me and have never had a chance to attend the developer summit before, start bugging your manager about it for next year; it’s a good time.  Traveling is a pain and there’s a lot of sitting still involved (which is tough for me), but you’ll see a lot of great stuff and Esri puts on a great show.

Ben Taylor

I attended a session today geared toward the defense and intel community. The majority of the presentation centered around creating maps for military use and 2525C symbolization, however, there was a cool demo that utilized the upcoming 10.1 runtimes, specifically the C++ Qt SDK. The demo included messaging between multiple simulated vehicles. The performance of the application running on the new runtime was quite impressive.

And speaking of the new runtime, I also attended a session highlighting their upcoming release in 10.1. There are some pretty significant changes coming that will yield a smaller overall footprint, increase performance, and simplify deployment. However, low level access to ArcObjects will not be supported in the runtime. So there will be a shift in development paradigms mainly toward WPF. A word of advice I picked up in the presentation is to get familiar with the Silverlight Web API, because if you are comfortable with that, you’ll have a good head start on working with the new runtimes.

Tommy Bramble

I started the final day of the conference with the ‘Building RIA Clients Using ArcGIS Workflow Manager REST Services.’  Esri is calling AGS Server Workflow Manager the ‘complete GIS management system’ and recommends using the product to create and manage GIS project workflows.  The product can be used by all stake holders including clients, managers, analysts, and developers.   Workflow Manager will allow you to author and publish project workflows, centralize project information and documentation, control access to data (including spatial data in your SDE repository), and integrate GIS into business processes.  The main intent of this session was to demonstrate how you can build a custom workflow manager solution using the new REST endpoints available.  The presenters showed examples of a custom Flex viewer that was able to query users, jobs, reports, and workflows through attribute criteria or by spatial area-of-interest.

My next session of the day was titled ‘Redesigning Desktop Applications for the Web.’  The session was basically a talk on why you would (and wouldn’t) want to move your applications to the web.  The web has become a pervasive, accessible, and proven platform and now might be the best time to consider moving desktop apps over, but, ultimately, you will need good project planning and a sound understanding of the user audience to make the best decision.   Some of the key information I took away from this session included:

  • The web is a fast and cheap infrastructure that provides a platform for easy collaboration and sharing.
  • Application development is easier now than ever before (with WebAPI’s and Application Builder tools).
  • The web interfaces are richer and smoother, allowing a desktop-like experience.
  • The user experience on the web is highly important.  You need a simple, but powerful application.
  • You must know the user audience and application requirements.  In some situations, a desktop application will still be the best choice.
  • Must consider security implications on the web.
  • Planning is key!  Planning the design, development, and deployment phases are critical to any application’s success.

My last session of the conference was ‘Advanced Development with ArcGIS API for MS Silverlight/WPF’.   Having no development experience with Silverlight, my goal was to learn what is possible with the framework and how it may differ from the other WebAPI’s.  The presenters here, like in most all other web sessions, stressed the importance of the user experience and reminded the audience that the application does not always have to be map-centric.  The application examples presented here demonstrated the grid/map interaction (i.e. hover over a data record and an assortment of animated effects highlight the related map feature) and other visually rich ways of interacting with the map and attribute data.  Some basic editing examples were also shown.  From the standpoint of a beginner Silverlight developer, I was most interested in the new Silverlight Application Builder (a WYSIWYG Silverlight editor) and the Visual Studio Silverlight templates.   Apparently, you can easily switch back and forth between the Application Builder and your custom Visual Studio-based Silverlight projects, which could make development in teams easier.

This was the end of the conference for me.  Esri did a great job and presented a lot of useful information regarding their products and future trends.

Esri Developer Summit: Day 4

Danny Bradshaw

Alas, all good things must come to an end… but not without a few more great technical sessions and some parting words from Esri.

The morning kicked off with Advanced development with Android.  While this session was heavier in code than the Intro to Android session I attended earlier in the week, the takeaway for me was the reaffirmation that this new API will be a major player in Esri’s API “toolkit.”  The development team demonstrated building an application from scratch to completion, but made a few quips I wanted to share… 1) The Android API team is largest platform specific API team employed at Esri, 2) The Android team claims they will be the first to enable disconnected mobile editing using a targeted platform API (obviously disconnected editing is already available with AGS Mobile).  Esri is committed to Android, and their excitement made me want to build and deploy a native Android App.

Next was a discussion concerning the Yetti of the Esri API stack… the File Geodatabase API.  The demo was dry and monotone, which combined with C++ programming created a slight glaze over my ability to focus.  However, what kind of a developer summit proxy would I be without a few bullet points of info:

  • Only available for 10.0+ File Geodatabases (due to metadata structure change with 10.0)
  • Can create, open, delete, read, edit,  etc. on all simple features; Can read complex features
  • Can perform attribute queries, and very limited spatial queries
  • Supports a subset of SQL92 standard SQL queries
  • No raster or attachment support (yet)
  • They’re working on creating DotNet and Java wrappers ASAP

The technical sessions ended with an inspiring and animated Flex demonstration with Mansour Raad.  As a Flex developer, it’s unfortunate that this was the only Flex session I was able to attend, however, this was my best and last session of the summit.  The team announced the FeatureLayerTask (an object allowing editing that doesn’t require a feature layer).  Mansour was also kind enough to treat this session as an advanced session (sometimes advanced sessions discuss how to add dots to a map) and covered Flex heat maps (using bitmap blitting – http://en.wikipedia.org/wiki/Bit_blit), custom clustering symbols, and discussed best practices for flex software development.  Mansour’s discussion reaffirmed to me that decisions we made with some of our recent development projects were good ones.

Esri Developer Summit: Day 3

Dan Levine

So Esri kicked off Wednesday announcing the winners of the Developer Challenges.  Frank Roberts won the Developer Challenge with what looks to be something like the Tri-View Tool that we have been deploying for a couple of years. Not sure about the details, but it would be worth looking at to see if we can leverage each other’s work. Some of you may know Frank; we have interviewed him a couple of times trying to figure out how to make a fit within GISi. Congratulations to Frank.

Next was the Keynote. Apparently a last minute substitution by the Gartner Group sent a solid number 2. Michael King, Research Director, Gartner, spoke on The Future direction of Mobile Application Development.  He had many different stats and charts talking about how the mobile industry is incredibly dynamic now and how that impacts us as developers and solution providers. A couple of the interesting stats:

  • In the next few years 70% of all interaction will be through our cell phones
  • Mobile is a Trillion dollar business.
  • Industry is VERY fragmented and don’t see a consolidation for a least of couple of years if it ever happens, largely driven by how personal the use and experience of mobile devices are.

Above and beyond the statistics and observations, Michael presented that he believes that the successful solutions will be the ones that most effectively harness the ability to be context aware and have the most elegant interfaces. Specifically around context aware, not only is he referring to where you are (GPS), what you are doing (calendar), what you are supposed to be doing (reminding you that your anniversary is tomorrow while you drive by the florist that you bought flowers from last year), but tying this all to business and personal data systems to the point where the mobile device is keeping track of more information about you than you possibly can remember at any one time. Couple that with an interface that adjusts to how you use the phone and learns what your preferences are over time.  For instance, for me that might mean that when I travel I always look for a CrossFit gym local to where I am staying. Well instead of me going to Google on my phone and stumbling through entering in “CrossFIt XXXXXX” for wherever I am, it would recognize that I am about to travel and just performs the search and gives me a list of results in the format that I typically look for: contact information, directions, and schedule. Within this theme of contextual awareness he talked a little about Augmented Reality and how the industry is still trying to figure out what we can do with this, how we implement it, and that we have to wait a bit for the hardware technology to progress to make this really work well. An example he gave was a crew in a manhole looking at a 100 year old valve. The only guy in the city that knows how to maintain that valve is back in the office but can share the camera screen from the guy in the field and do live annotation to walk the crew through what to do and not to do.  This did tee up the presentation that Pat did later in the day well, and packed the room.

I am still somewhat surprised that the Mobile sessions, and there are a bunch of them, aren’t the ones that are packed. Seems like the server sessions are still the most popular.

Steve Mulberry

Check out the recorded plenary sessions here: http://www.esri.com/events/devsummit/videos-and-photos/index.html

Great keynote speaker form Gartner; He discussed the many facets of mobile computing and the trends and predictions for the future. One thing that stood out was the amount of mobile devices projected to be used in the future will by far outnumber the laptops. So planning accordingly with respects to UI/Application development is a key to succeeding in this market space. The speaker noted that mobile development should not be a sideline event but imbedded in application development strategies and procedures. We keep hearing the same ole adage about making it simple and easy to use. But we GIS geeks need to think outside the laptop when it comes to mobile development. That’s where you the designers come in.

I sat through several sessions dealing with performance, scalability testing and architecture scaling. The common theme always lead back to making sure your map document is optimized and ready for web deployment. Here are some tools that help this process:

  • PerfHeat – http://arcscripts.esri.com/details.asp?dbid=16880. This tool produces a grid showing color coded rendering time ranges across the map extent. Display rendering times are generated for each map scale, presenting a spatial overview of display processing loads.

All these tools along with additional capacity planning and performance benchmarking can be found in the report. http://resources.arcgis.com/gallery/file/enterprise-gis/details?entryID=6367F821-1422-2418-886F-FCC43C8C8E22

Esri unveiled a new GIS Testing Tool that incorporates the above tools and methodologies in an all-in-one tool. Currently this tool is only available through professional services, but it was suggested that once final it may be made available for download.

Patrick Barnhart

The two biggest things that happened today, at least from my point of view, were successfully surviving my presentation on Augmented Reality and having the GISi dodgeball team (named Gone in 30 Seconds in honor of last year) exceed expectations.  The presentation went well; if you’d like to see the on-screen part of it, check out http://prezi.com/iy3lglcdn6xi/augmented-reality-using-arcgis-and-layar/.  Prezi saved the day on this one; it made things a lot more fun to prepare and present than if I had to do it using standard slides.  Gone in 30 Seconds got a bye in the first round, emerged triumphant in the second and then were defeated by the team that went on to win.

As for the stuff I’m really here for, which is to learn as much about developing web applications using Esri products as possible, it was also a success.  I attended a session entitled ‘Advanced Development with ArcGIS API for JavaScript’ which really should have been called ‘Intro to Mobile Development using the JavaScript API plus some HTML 5 and a touch of CSS3’.  So, it wasn’t what I was expecting but it still turned out to be the most interesting session I attended today.

There are APIs other than JavaScript that are designed for mobile development but they’re device specific, which is kind of a turn off for me.  If I’m putting in the time to write a phone app, I want it to run on iPhones, iPads, Androids, Blackberrys, you name it, and if it’ll run on the desktop too then glory hallelujah.  Write once run anywhere is what I’m after and while it seems that the world is not 100% ready for that ,the JavaScript API gets you closer than anything else.  Other than straight html of course, but that’s just too limiting.  The morning’s keynote session talked about the “do’s and don’ts of mobile development, and if you’re just using html, you’ll end up with a bunch of don’ts (clunky interfaces that are a pain to use).

To make a really sweet phone app with a native look and feel without redoing the code using a separate API for each device, you need to use a framework for the front end.  Something like JQuery Touch, DojoX Mobile or Sencha Touch provides the user with nice big buttons and the fat-finger pans and zooms that everyone is used to.  I do a lot of ExtJS development so it would have been nice to see Sencha in action, but JQuery Touch is cool too and that’s what most of the demos were.  These apps won’t work for the desktop but that was pie-in-the-sky anyway; the platforms are just too different to use the same interface.

  • iOS (iPhones and iPads) – this was described as the best browser of the mobile devices with support for SVG overlays, geolocation, html 5, creating and editing vector graphics, etc.
  • Blackberry Torch – this one’s a little more limited in that zooming in/out using a pinch, isn’t supported and it’s a little slower, but it does handle most of the other capabilities.
  • Android – the Droid phones are more limited in certain things, especially since it doesn’t support SVG overlays.  Vector graphics are rendered as part of the canvas so you can’t select an individual feature and manipulate it, although you can create features and add them.  You also have to set a meta tag to disable gestures on the entire page so you can zoom in/out on a map object, but not the overall view.

So, back to what I want, which is the ability to run the same app on as many devices as possible; the way to go about it seems to be using something like Sencha Touch to build the interface and then hook the events and listeners to JavaScript API, which calls to ArcGIS server.  Design the app for the most limited device, which surprisingly enough seems to be the Android, and go to town.

The JavaScript API works the same way as the rest of the Web API family – create a map object, create a layer object, create a feature object, add the feature to the layer, the layer to the map, etc.  There are a lot of built-ins (way more than OpenLayers), but it’s pretty straight forward stuff once you get the hang of it, so I’m not going into it much here.  But now at least I have a plan for building flexible mobile apps and know what tools I’d like to use when I get the time to make it happen.

The session also went into some pretty cool examples of using HTML 5 and CSS3, but I’m not getting caught up in that until it’s actually here.  Quick note: there’s a site called CanIUse.com that tells you which devices support the really cutting edge stuff.

And there was a bonus!  At the very end of the presentation they mentioned something called the Print REST API, which apparently takes the pain out of printing maps with vector overlays, external wms layers, text, etc.  Exactly the stuff I’ve been doing in the open source world for the last couple of months.  It doesn’t help with my current project, but I’m sure I’ll get a shot at it sooner or later.

In a separate session on Python, I also got a glimpse of using ArcPy to support template driven printing to PDFs, which is another of my current tasks (also using open source technology).  So again, I can’t really use it yet, but I foresee great possibilities and hope to learn more about Python tomorrow.

Danny Bradshaw

Day 3 kicked off with an intriguing discussion with Michael King from Gartner Research concerning the pervasiveness and trends in mobile computing over the next few years.  Although nobody has the magic 8-ball (especially in the ebb and flow of the mobile tech industry), he threw out some interesting stats:

  • 214,000,000 tablet devices in the next few years
  • 80% market penetration for smart phones in developed countries in the next few years
  • 2013 – Mobile phones will overtake PCs for internet access.
  • 2014 – 30% of users will use augmented reality with their mobile experience

Some other interesting sessions came from the Esri Prototype Labs and Esri Production Teams (i.e.  those responsible for making sure they hit the deadlines).  While I could write a book on cool stuff, I was particularly interested in an unconventional dynamic physics symbol, in which the bigger symbols would “bully” the smaller symbols and take their place on the map.  The prototype team also demonstrated an interesting augmented reality app that used a sheet of paper with a specific “marker” that was replaced with an interactive map while video conferencing… think green screen.

The development teams/managers talked about the Esri internal development process.  I was interested to see their strategies, which closely follows the Agile (Scrum) development process.  ESRI loves Scrum and was evangelizing that development process.  I’ll be honest, I was bored to tears as the discussion turned to their extensive… extensive QA processes, but be happy to know they’re thorough.  Some interesting stats out of that session:

  • 200 unique developers checking in code daily
  • 95,000 source code files for ArcGIS Desktop, which takes 5 hours to compile (daily)
  • AGS Desktop 9.0 = 6.9 million lines of code;  AGS Desktop 10.0 = 15.97 million lines of code

Melinda Frost

Since I am all about mobile I am going to write this up on my iPhone! Of course it will be shorter because I did have to go to walk-in clinic for a sinus infection. Everyone here is super nice.

Anyway- back to business. Tuesday night at the meet the teams night, I ran into two of the developers for the 10.1 mobile SDK. So, of course, I drilled them about the problem I am having with the WPF map control ‘flickering’. People want it to behave like TomTom or Garmin.  They told me that the 10.1 SDK for mobile will be significantly different. All the API will be pulling from a new core SDK. And they claim it will be WAY better than TomTom in that regard.  I said ‘Great but I need that NOW’. I did leave my contact info with them so I can be in on the holistic testing for this. Wednesday I ‘tackled’ Martin and Jay- the head guys for the mobile SDK dev team. Again same answer.  After I show them the best work-around I have come up with and I start to see some hope (breaking down) from them. They plan to take my code back and look into if that is something they can do sooner. Fingers crossed!

Other conference related info picked up is that if you have developed for Silverlight web app and/or WPF apps, then you are all ready to build a Windows 7 phone app. Same xaml and C# or VB.NET in back end.  Good news for all you Silverlight and WPF developers.

Tommy Bramble

Day 3 started with the conference Keynote Speaker, Michael King, from Gartner Research.  He talked about the past and future trends in mobile technology and how our lives will be impacted as the technology evolves.  Context-aware computing will become the norm where our smart devices, and the services that power them, will know more about us then we do our self.  The smart devices will become even more powerful and ‘aware’ through sensor driven data capture like facial recognition, better speech recognition, enhanced audio and video sensors, and other advanced sensors that require less direct user input to interact with the device.  Mr. King also covered some do’s and do not’s of mobile application development and commented on how augmented reality will become a much more powerful tool as it evolves.  We can expect to start seeing more ‘real world’ applications where augmented reality apps will assist people with work and other things in life instead of just being the ‘cool’ toy.

My first session of the day was ‘Advanced Development with the ArcGIS JavaScript API’.  This session was almost entirely focused on mobile development with the JS API, although the session was not listed as mobile.  The session probably would have attracted a larger audience had they actually listed the course under mobile.  The presenters demonstrated building mobile friendly web apps using jQuery Mobile, Dojox.Mobile, and Sencha Mobile; all using the JS API for the mapping functionality.  The presenters also briefly covered the HTML5 components that are available in most browsers that can also be leveraged in mobile web apps.  In my opinion, there wasn’t much ‘advanced’ knowledge regarding the mobile development.  The demos were very basic examples of wiring up a mobile web app.  Maybe just the fact that it was ‘mobile’ was advanced.  I did have to leave the session 10 minutes early to prepare for my Tech Support session with the Esri techs, and I was told the presenters did demonstrate a really cool drag-and-drop feature of the web app, but you’ll have to hear about that from Ben who was available for the entire session.

Next up was the ‘Building Secure Applications’ session.  This session focused on securing your ArcGIS Server services and the web applications that consume them.  The presenters first reviewed the correct procedures for securing the AGS services using users and roles, and then reviewed how to use the admin security tokens to get access to the secure services.  The session also covered using proxies with your secure services and then taking the security to the next level by securing your application front-end (client).  The out-of-the-box ASP.NET membership provider was used as the examples for creating the AGS server user and roles and for the application security, although a custom membership provider can be used in its place.

I sat in on the ‘Intro to ArcGIS API for Windows Phone’ next.  This topic area was completely new to me, but I was able to walk away for this session with the basic principles of the Windows Phone development.  A point the presenters emphasized repeatedly was that developing for the windows phone was no different than developing Silverlight applications.  Most all the same tools and class libraries for building Silverlight apps are used for Windows Phone, with the exception of a few class libraries specific to the Windows Phone environment.  The presenters also demoed some of their existing Windows Phone applications, like ArcGIS for Windows Phone and the AtoB Navigation application.  The presenters also gave away a Windows Phone 7 at the end of the session to the person in the audience who could stump the crowd with a Silverlight/Windows Phone development question.

Next up was the most anticipated part of the day, the Dev Summit Party.  Esri had a nice setup of games and entertainment as usual with the highlight of the event being the Dodgeball Tournament.  GISi formed the team ‘Gone in 30 Seconds’.  Luckily, we did not live up to that name and actually won our first match-up in the second round (after a first round bye), but sadly were knocked out of the tournament in the third round.  I also took a shot at table tennis, but finished the night with a disappointing record of 1-4 in my match-ups.  After my last competitor destroyed me by a score of 21-8, with a few of my coworkers watching, I decided to retire from table tennis and call it a night.  All and all another great day at the conference.

Ben Taylor

I sat in on another Javascript API session. There is some pretty slick drag-and-drop functionality coming down the pipeline. The presenter showcased a file api by dragging an image directly from his file system and dropping it onto the map within the browser.  I thought that was pretty cool until he dragged a csv file to his browser and the points along with the associated attribute data within the csv file appeared on his map. He also was able to add additional services by just dragging in the link of a rest endpoint from another browser and dropping it on the map. The only caveat at this point is they’ve only gotten the functionality working in FireFox and Chrome. They’re still working on getting this viable in IE9.

In addition they demoed a print tool for Javascript API that will probably be included in the next release. This tool is meant to be used until out-of-the-box exporting is made available in 10.1.

I also attended an advanced Flex session. This being my first dev summit, it turned out to be quite a treat to hear Mansour Raad present. He gave a lively presentation on how to best utilize the MVC pattern to develop Flex applications, so that they can easily be adjusted to fit web and mobile platforms.