{"id":66,"date":"2015-09-23T00:05:49","date_gmt":"2015-09-23T00:05:49","guid":{"rendered":"http:\/\/www.prelive.unitec.ac.nz\/GisForConservation\/?p=66"},"modified":"2018-03-13T01:02:59","modified_gmt":"2018-03-13T01:02:59","slug":"exercise-5","status":"publish","type":"post","link":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/2015\/09\/23\/exercise-5\/","title":{"rendered":"Exercise 5"},"content":{"rendered":"
Generating 3D Views of a Surface<\/span><\/h6>\n

Contours (intersections of the surface at different elevations), hillshade (areas shaded depending on the sun’s height and direction) and aspect (angle that the surface faces relative to compass directions) are some of the other useful models that can be derived from a 3D surface model.<\/p>\n

Click here for PDF version<\/a><\/strong><\/p>\n

Generating a 3D view of a Surface<\/span><\/b><\/div>\n
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    1. Open ArcScene and create a New Blank Scene<\/li>\n
    2. Right mouse click Scene Layers ->Scene Properties, Set the Coordinate System to Fiji 1986 Map Grid<\/li>\n
    3. Add \u201csrtm_72_16.asc\u201d<\/li>\n
    4. Right-mouse click on \u201csrtm_72_16.asc\u201d, select Properties and click on the Base Heights Tab<\/li>\n
    5. Click on Floating on a custom surface button and select the same file<\/li>\n
    6. Right-mouse click on the Scene Layers -> Scene Properties<\/li>\n
    7. Click on General Tab set 0.0004 for Vertical Exaggeration<\/li>\n
    8. Add the image file previously rectified in Exercise 2 and follow steps 4-5 to show in 3D<\/li>\n<\/ol>\n<\/ol>\n