00:01With ArcGIS 10, we've taken another step into the 3D world.
00:06And now, 3D GIS is reality within the system.
00:11And this is a valuable component for many of you to look at certain types of features and we'll review that now.
00:21Think about 3D data and 3D GIS and how with the ability of having access, some tools and templates...
00:28...you can begin to do different types of things.
00:31You can take your traditional building footprint and maybe in a 2D scenario...
00:37...begin to visualize the impact of a new building on the city that you live in.
00:43Do some analysis or edit some of the features there.
00:48And then finally be able to collaborate or be able to present that information to officials on the impact of that.
00:55But that's been pretty hard to achieve because there hasn't been a lot of resources to get you started.
01:01Well we've taken a look at that and we've...came up with a Virtual City template which is available up at the Resource Center...
01:09...just like Katja had been up to earlier.
01:12There's associated...you have the Community Basemap template.
01:15Well this is just another template.
01:17What is that template?
01:18It's about the virtual city.
01:20It's allowing...we took the time out to listen to you and understand some of the concepts and generate a...
01:27...3D data model along with some documentation to get you started on that process...
01:34...and then also created some focus-based tools for you to do analysis and visualization of these components.
01:43Think about this and having that ability to do that.
01:463D...taking your 2D data and putting it into a 3D world.
01:50What does that mean to you?
01:52Let's look at some of the results of and potential for that.
01:57Simply put, you can begin by doing a skyline analysis.
02:01Take that 2D building footprint, give it some height or extrude...
02:08...that data in the 3D environment to create that new building landscape.
02:13How does that look within your system?
02:18Additionally, you can begin to do analysis.
02:21Maybe it's the volumetric shadows.
02:24What's the impact of that building have in terms of the shadow conditions on other structures or areas that may be impacted?
02:32Say it's a park or a housing development...
02:37...and there may be an impact on the use of that park because of the shadow conditions at different times of day.
02:44You can be able to start to see that in part of your planning process and have people understand and then be able to mitigate for that if needed.
02:52Two areas that I find interesting are the space management and looking at the interior visibility.
02:58Many of you have to maintain buildings in your organization at the state or local level...
03:05...and you have to come up with evacuation plans and provide information...
03:09...so that people can understand where things are in the event of an emergency.
03:14What better way to present that information but in that 3D environment...
03:19...so that the first responders can understand where the valves are that they need to turn off on that wall...
03:28...or where the power switches are but being able to see that in a 3D environment...
03:32...can only help them better to understand the situation they're going into and then create the best response plan for that.
03:41Let's now take a demonstration of this capability and functions and go from there.
03:47Alright. Thank you, Tony.
03:49So 3D is an important component of the ArcGIS system and what we're looking at here is downtown Philadelphia.
03:58We see the textured buildings complete with vegetation and street furniture...
04:04...such as cars, streetlights, and traffic lights that all add to the realism of the scene.
04:11Now, how many of you have textured buildings?
04:16Okay, one or two of you.
04:19Well, that's okay, because you probably have the building footprints...
04:27...and what you can do is you can extrude them and convert them to 3D features.
04:32And once you have those, you can do analysis and visualization with those.
04:38Now we can use the Virtual City template that Tony has mentioned to help us in setting our city.
04:51And so in here I have one of those textured buildings with high-level detail...
04:58...and level of realism such as columns and the church steeple and so on, but I also do have those trees of different kinds and...
05:09...traffic lights and streetlights and so on, and those features actually come from the Virtual City template that Tony has mentioned.
05:18So you don't have to reinvent the data model.
05:22You can get started by downloading that template.
05:26Now another improvement that we see in ArcGlobe is the ability to start an edit session in this environment.
05:36So here we have the 3D Editor and once I start an edit session, you'll see that I have the feature templates just like I had in 2D.
05:46And so I can go ahead and add a new model so I received an updated COLLADA model for the city hall...
05:54...and so I can enter this building in here and just like in 2D, I can update the attributes or in this case the building is the city hall...
06:05...I can fix the placement of the building and so on.
06:10Now, really, the power of 3D environment and the difference between 3D viewer and 3D GIS...
06:20...is in the ability to do modeling and analysis.
06:24And you have access to all the same tools in ArcGlobe as you do in ArcMap.
06:31However, there are some types of analysis that you can only do in three dimensions and Tony has mentioned some of those...
06:37...things like volumetric modeling. And let's take a look at one of those.
06:44So, here I have again an area within the city of Philadelphia, and I have my textured buildings that I know the height of and so on.
06:54And you'll notice that I have the shadow that's part of the image.
06:58And I do know the date and time when this image was flown...
07:03...and so what I've done is I've run the volumetric shadow analysis, and I've created the shadow for this area.
07:11And you can see that this shadow really matches quite well with what is on the image.
07:17Now, what can I do with this kind of information?
07:20Well, one thing that you can do is you can figure out if there is perhaps a new building that is being designed.
07:30What kind of shadow is it going to cast on other buildings or parks?
07:35Maybe there is a play area that is now going to be shadowed that wasn't before.
07:41Or in this case, I've run the analysis for the whole scene and I've created the shadows for winter solstice at 12 o'clock noon...
07:51...and so I can see in this example this building is partially covered...partially inside the shadow...
07:58...so that can affect the rents that I can collect for the building, for example.
08:03And in case of Philadelphia, it gets pretty cold there in the winter...
08:08...and so one thing that they have to struggle with that we don't is snow removal.
08:13So it is important to know how many hours the building or a street is in the shade...
08:20...in order to figure out where we need to remove snow more, where we need more salt or sand.
08:27Another type of analysis that we can do in 3D only is figure out which part of the building is inside the shadow.
08:36So you can see the shadow is falling at an angle.
08:40And so some of the windows are inside and some are outside the shadow.
08:45So this is another example of 3D analysis that you could do.
08:50So here I'm looking at the results of my analysis in the client in which I created those models and ran the models.
08:58And that is ArcGlobe.
09:00But I have also published these results in order to make them available to other clients...
09:08...to people that perhaps do not have ArcGlobe but do have access to ArcGIS Explorer.
09:13And I'm going to pass it over to Jennifer and she's going to show you how you can consume the results of such analysis in ArcGIS Explorer.
09:23Okay. Thank you, Katja.
09:24So Katja has taken her 3D data as well as the results from her analysis and published it using ArcGIS Server as a globe service.
09:33So one way that I can consume this information and view it is using ArcGIS Explorer.
09:39So she's packaged it up as well with an ArcGIS Explorer presentation.
09:43So now I can take a look at the same features that she has.
09:47Using ArcGIS Explorer, I can also take advantage of using some of the community basemap content...
09:53...that has been contributed by the city of Philadelphia.
09:57Using ArcGIS Explorer, I also have access to the high-resolution imagery that is being served out through ArcGIS Online.
10:06And you'll notice when I get closer to the downtown area, all of the street features that Katja showed in her globe scene...
10:12...so all of the trees, the cars, the buildings, all of this is being displayed inside of ArcGlobe.
10:21In addition to just looking at the data and information...
10:24...the results from her winter solstice analysis has also been published and displayed within this.
10:30So ArcGIS Explorer gives us a great way to share our data, our information, our analysis results...
10:40...package it up in a nice presentation and then distribute that to other users and decision makers.
10:46Before I pass it back to Tony, I just want to take a moment to show you where you can get the virtual cities template.
10:54So this is fairly new.
10:55It's just gone on the Resource Center in the past week, I believe.
10:59And so you can download that virtual cities template from here, and you can begin to start to build your own 3D scene.
11:06So you can grab your, as Katja talked about, your building footprints.
11:11You can extrude them, and you can begin, plug them into one of these templates...
11:15...and begin working with your own data and information and serving out some 3D services or just analysis inside of ArcGlobe. Tony?
11:28So the 3D component, it's part of ArcGIS now, and the challenge posed to you is that if you do have some 2D information...
11:36...is to take that template and pour in some of that 2D information into that and build a...
11:44...surface and then simply visualize that.
11:46Just think of what the power just from that component alone can help people begin to understand.
11:52And then take it one step further and begin to look at some of the analysis tools that are there.
11:59But we've provided the resources to help you get started...
12:01...and then you guys can help us understand what more functions do we need based upon what you're going to be doing with that 3D city.
ArcGIS Provides a 3D GIS
- Recorded: Sep 28th, 2010
- Runtime: 12:10
- Views: 17816
- Published: Nov 12th, 2010
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