ARCGLOBE TUTORIAL PDF

One benefit of using GIS is the creation of 3D visualisations using geographic data. ArcGlobe has the same look and feel as Map and Scene but has some extra added benefits of display and flexibility. A few things to highlight here before we go on. The Table of Contents has three sets of layers turned on by default: Floating, Draped and Elevation layers. Draped layers are like a bedsheet thrown over a piece of furniture — they take on the shape of the underlying elevation surface. By default, an Imagery layer is loaded as a disappointingly out of date satellite image.

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One benefit of using GIS is the creation of 3D visualisations using geographic data. ArcGlobe has the same look and feel as Map and Scene but has some extra added benefits of display and flexibility. A few things to highlight here before we go on.

The Table of Contents has three sets of layers turned on by default: Floating, Draped and Elevation layers. Draped layers are like a bedsheet thrown over a piece of furniture — they take on the shape of the underlying elevation surface. By default, an Imagery layer is loaded as a disappointingly out of date satellite image.

Floating layers are layers on the globe but not attached to the surface in the help files they give examples of airplanes and clouds…. The 3D navigate tool at the left is used to move your viewpoint around. With this tool active, you can left-click-hold and move the globe around. To zoom in, right-click-hold and drag the mouse down towards you — opposite to zoom out.

Or you can use the mouse wheel to move in and out. Hold both buttons down and drag to pan the view. There are two navigation modes: global and surface.

At first the global mode is set and you can pan around much like you would in ArcMap with a view looking straight down at the ground. In surface mode you can tilt the view and get oblique views. Toggle between the modes with the mode button:. In global mode I might navigate here:. Holding down the left mouse button lets you change the angles.

We can add any spatial data layers we like and drape them over the elevation surface. The Add Data button gets us access to our layers. I get this screen first:. This allows me to set the scale at which this layer is visible. Click Next:. We can use this to set features to real-world size if we want.

I generally accept this and click Finish. The layer is added to the map but for some strange reason is usually place under the Imagery layer and is therefor not visible — dragging it above that layer, symbolising by landcover category and adding some transparency gives us:. Once on the map it was pretty easy to navigate around. The first window I get when adding the data is this one:. Earlier I mentioned that you can add your own elevation layers.

Globe recongises this as a raster layer and anticipates that I might be adding my own DEM. In this case, I just want to drape the raster over the elevation surface to I stick with using this as an image source. Again, it inserts it under my Imagery layer argh so next I drag it on top, play around with the symbology set the non-visible cells to No Color, reset the visible cell colour, add a bit of transparency and reset the view :. This is a nice way to demonstrate how viewsheds are driven by topography.

Ticking the first box sentences to point to always be a flat, two-dimensional image. Who wants that? When you click on the Symbol image you get the Symbol Selector:. We can tweak the symbol settings to get it scaled to its actual size and placement but this is probably pretty good for now. An ArcGlobe Tutorial.

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An ArcGlobe Tutorial

To create 3d visualization that allows you to fly through the terrain and simulate the image that an actual observer on the ground will see, use ArcGlobe. It is similar to Google Earth but allows you to import high resolution elevation maps and drap any desired ground image or map on the surface. This example uses files from the Grand Canyon area. Import the data file. You may be asked if you want to create pyramids. Respond yes. ArcGlobe will ask if this file contains a background image or elevation data.

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