So you can see the exaggeration can be dynamically adjusted as needed, and this can be used to help when we start designing the vertical geometry. So now you can see that the exaggeration has been changed quite dramatically and you can clearly see the vertical differences. We're going to go ahead and set that to 20 so that you can see the vertical exaggeration change and then go ahead and fit to view. Now, you can see the default exaggeration is set for 10. And you'll see there's an exaggeration tab. If you further need to adjust the vertical exaggeration, you can simply go to the view attributes, select the view attributes from the top-left corner of the view, and under the civil panel, you can expand that. You may not be able to see the variations in the vertical elevations very well. This is because, a lot of times, the existing ground may be too flat. By default, the profile model view exaggeration is exaggerated 10 times vertically. So when we go to design the proposed vertical geometry, we'll be able to use that as the active profile later in the course. The active profile can be changed at any time. Also in the 3D view, you will see 3D feature line that is created representing that particular profile. And when you do that, what happens is this existing ground profile gets associated to the horizontal alignment for London Road. To set the profile active, select the element selection tool, navigate into the profile model view, select the existing ground profile, hover your cursor there for a few seconds until you see the context-sensitive menu up appear and then select Set as Active Profile. We'll use this as the default profile for now until we design the proposed vertical alignment. Setting the existing ground profile active will make it associated to the horizontal alignment. Next thing we're going to do is select the existing ground profile, and we're going to set that active. Let's go ahead and fit our view so you can see the entire existing ground profile. Notice the Y axis displays the elevations. Notice the horizontal axis along the bottom represents the stationing along the alignment. This will be used as a guide for designing the proposed vertical geometry. And what you see here is the existing ground profile along the London Road alignment, it's been extracted from the attached existing terrain model. So this is profile model for the London Road alignment. Notice at the top of the view window it says View Four, Profile, London Road. So go ahead and select view number four and you'll see the profile model is created in view number four. We're going to go ahead and define it in view number four. The profile model can be defined in any of the eight views available at the bottom of the screen, utilizing the view toggles. So, select the horizontal alignment for London Road, and then from here, you're going to be prompted to select or open a view. So let's go ahead and zoom into our horizontal alignment so we can better select it. You'll be prompted to locate a plan element. To define the profile model view, we'll simply go up to Geometry under the Vertical panel. So we're going to do that by utilizing a new tool called Open Profile Model. Prior to creating vertical geometry, you must first define a profile model view to display the vertical geometry into. For this lesson, we're going to continue working in the "Geometry DGN" file and we're going to begin by creating a profile model view. In this lesson, you're going to learn how to define a profile model view, how to review the profile model view and also how to set an active profile. A profile model is used to create, edit and view vertical geometry elements.
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