By Heather Kennedy
Render 3-dimensional info and maps with ease.Written as a self-study workbook, creation to 3D information demystifies the occasionally complicated controls and tactics required for 3D modeling utilizing software program programs reminiscent of ArcGIS 3D Analyst and Google Earth. Going past the handbook that includes the software program, this profusely illustrated consultant explains the best way to use ESRI’s ArcGIS 3D Analyst to version and study three-d geographical surfaces, create 3D info, and convey monitors starting from topographically life like maps to 3D scenes and round earth-like perspectives. The engagingly hassle-free instruction:• Walks you thru simple strategies of 3D info, progressing to extra complex recommendations similar to calculating floor region and quantity• Introduces you to 2 significant software program programs: ArcGIS 3D Analyst (including ArcScene and ArcGlobe) and Google Earth• Reinforces your knowing via in-depth discussions with over thirty hands-on workouts and instructional datasets at the help web site at www.wiley/college/kennedy• is helping you practice the speculation with real-world applicationsWhether you’re a pupil or specialist in geology, panorama structure, transportation process making plans, hydrology, or a comparable field, Introduction to 3D information will quick flip you right into a energy consumer of 3D GIS.
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Additional info for Introduction to 3D Data: Modeling with ArcGIS 3D Analyst and Google Earth
In order to draw rasters in 3D, however, you have to tell ArcScene where to get the z values to use for base heights. ArcScene doesn’t automatically use the values in the cells of a raster for base heights because quite often rasters model something other than elevation, for example in an aerial photo or a grid of pollution dispersion. ) An elevation raster and a 2D feature layer of rivers. When they’re first added to ArcScene their base heights are set to 0, so they lie flat The elevation raster’s base heights have been set to its cell values, so ArcScene displays it in 3D.
Drag the Contrast slider bar back and forth between 0 and 100. The slider bar controls the amount of shading applied to the surface. As the contrast is increased, the shadows deepen, emphasizing variation on the surface. The default Contrast setting is 50. In the Contrast box, highlight the value and type 75. Leave the Scene Properties dialog open. indd 35 4/28/09 4:46:59 PM Chapter 2 Step 7. Change the Sun’s Altitude and Azimuth You can change the sun’s position by moving the sun icon with your cursor or by typing in values.
Hill_tin is also in your 3DDATA\ Chapter02\Data folder. 3. lyr to ArcScene instead. indd 33 4/28/09 4:46:58 PM Chapter 2 Click the Navigate tool, and hold down the left mouse button while moving the cursor around in the scene. Hold down the right mouse button, and move the cursor downward in the scene to zoom in to the hill. Step 4. Set a Background Color for the Scene In the Table of Contents, right-click Scene Layers and choose Scene Properties. Click the General tab. Click the Background Color dropdown arrow, and choose Sodalite Blue.