ArcScene Basics

the three key component to ArcGIS is called arc scene this allows you to render digital elevation models and other data in 3d so what I'm gonna do is add a digital elevation model and show you how to drape it and how to navigate the map so I'm gonna simply click my add data button and navigate to where I have my digital elevation model and when it gets added to arc scene you're going to notice that it gets added on a prospective angle or an oblique angle it's not like the direct overhead view that we're used to seeing with arc GIS so you also have different navigation tools than what you have in ArcGIS you have this tool which just allows you to click and move your mouse to move the image you have a fly tool which we'll use when we have rendered in 3ds that you can actually fly through the 3d landscape and then you have your other tools that you're used to seeing so what I'm going to do here is I'm just going to create a payment relief mat but it's going to be one that's in 3d so to get started with that I'm going to double click on this to go to the layer properties and in layer properties you're also going to know that the tabs are different than what they are in ArcGIS we have a base heights tab and a rendering tab I'm simply going to go to the display right now and just change it to an elevation color scheme and then I'm going to go to my arc toolbox to create a hill shade so that I can create that shaded relief map and if you remember we can get to our elevation tools in 3d or special animals so I'm just going to do it in 3d analyst I double-click the hillshade tool and then I select the de M as the input raster and I'm just going to keep it at the default location I'm going to hit OK and you can see the tool starting to run at the bottom and when the tool is done running it will add the hill shade to the map whenever this little globe is turning it means that arcmap is thinking sometimes harder than other times now that it has finished running you're going to notice that it gets at it and when we look at this we can see some places the hill shade and sometimes the de m and because of basically interfering with each other because they're on the same plane and they're just kind of fighting for that top level so what we're going to do to resolve that is if we go to the hill shade layer properties and go to our rendering tab we can change the darling priority of the features and I'm going to just set this to a 4 and you probably ask them well why not 2 or 3 I just noticed that sometimes that's not enough to make them not interfere and I found that for usually works pretty well so I'm going to make that selection so now you can see the 1 and if you remember from earlier modules we can make the TEM transparent or semi-transparent so that we can see both the hill shade and the de M so now we have a really pretty shaded relief map so now what I want to do is I want to make that this is showing up in 3d and because the digital elevation model each pixel has an elevation value assigned to it we can extrude the EEM based on that elevation value that's in that data set so to do that we simply go to our de M data layer go to the base Heights tab and we want to show the elevation from the de M so we select that and then we hit OK and you're going to notice that pops up off of the other one because it's being extruded by that elevation value and we have to do the same thing to the hillshade we have to go to ebay Heights tab select the custom surface but we have to make sure that we pick the right thing the de m is the data set that has the elevation values in it so we have to make sure we select that not the hillshade it's a common mistake that is made is that you accidentally select the long data set it's always the de M here and then we hit OK and then it pops it up a bit more and you can see here that they'll kind of interfere and with each other a little bit so we're going to play around with the rendering again just to see if we can you know clean that up a bit and seems to be a little problematic and this is a common problem what I could do to fix this and it's actually a very easy fix and it's gonna sound almost silly but if I would save my art scene project and then close it and reopen it everything would be just fine so I'm going to give that a shot so it's good night just take a couple extra seconds here and lo and behold saving it closing it out and reopening it makes it perfect and that's just something to keep in mind for a lot of different things in ArcGIS is something that keeps being problematic sometimes just closing or clears up the problem so now we have our 3d surface of this particular area in Lebanon County and what we can do to make this look even more three-dimensional as we could exaggerate it to exaggerate it we just go to our scene layers and we can change our vertical exaggeration I'm gonna click on calculate from extent and hit apply and you can see that that exaggerated a bit or you can put in one of the predefined exaggerations that they have you want to go a little wild you can you know bump it up quite a bit and you can see how that makes it really prominent in terms of the exaggeration so just a fun little thing that's available to you with the ArcGIS trial if when your trial expires work scene is part of the 3d analyst extension so you need 3d analyst in order to let which this particular part of the software program so with that I will show you one last quick thing and that has to deal with animation if we right click up here in an empty space and turn on our animation toolbar it's possible to create an animation of this area I'm going to reduce this exaggeration a bit because it's a bit over the top there we go so let's say that you wanted to kind of do a fly through of this behold de M but you can do is grab this capture of you take a picture where you want to capture the view every time that you change it your scene you can take a picture and you can zoom in and zoom out and then once you have those pictures taken mute the play button it will play that back to you and this allows you to create animations of areas like if you wanted to kind of simulate walking down a trail you could kind of do that thing or like if you're going down a highway and what you see on both sides you can do that with this kind of thing so there's a lot of options with this but it's really easy to use the camera part of it you can also use the bird to fly and do the recording I'm not the best at the flying I found that gamers are really good with that so if you into video games you probably be awesome with this fly tool but to fly you just kind of click on it and then just click your mouse and anytime that you want to move in closer just click and if you want to go faster you just double click if you want to stop hit escape and then you can kind of back out and so forth so you can record your screen with that as well you would just hit the record button here to do that so those are two different ways of doing animations but the big thing I want you to get out of this is the fact that you can drape imagery in orch scene I'm using a digital elevation model and doing that but you can also do aerial photography as long as you have the de M is what you're going to need because that's the starting point for train analysis so as long as you have a de M you can be doing lots of really cool fun things with this product

Channel: Nicole Ernst

Views: 24,159

Rating: 4.9340658 out of 5

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Id: qhu4-sf5s5Y

Length: 10min 15sec (615 seconds)

Published: Wed Jun 29 2016