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# Kml Basics Chpt 3 Geometry

## by tcooper66, Technology Integration Coordinator at The Walker School on Jan 28, 2010

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## Kml Basics Chpt 3 GeometryPresentation Transcript

• Keyhole Modeling Language – Chpt. 3 - Geometry Mr. Thomas Cooper Outdoor Technology The Walker School
• Adding Longitude and Latitude Grids
• Directions
• Go to “View”
• Select “Grid”
• Point Element
• <Point>
• <coordinates>latitude,longitude,altitude
• </coordinates>
• </Point>
• Changing Color and Style Directions 1. Right click on a placemark in the Places panel and go to properties 2. Click on Style and Color
• Measuring Tools
• Directions
• Choose the measuring tool.
• Choose the type of measurement.
• Choose the unit of measurement.
• Click on the beginning point and the end point you want to measure.
NOTE: Only GE Pro has tools for measuring Polygons and Circles.
• Changing Altitude
• Directions
• Right click on icon
• Choose “Properties”
• Go to “Altitude”
• Type in the altitude you want.
• Directions
• 1. Choose “Path” from the tool bar.
• 3. Name Path
• 4. Choose “Style, Color” to change the color and style.
• 5. Choose “Altitude” to change the height of the path.
NOTE: The path goes through the mountain; we’ll fix this next.
• USGS Tectonic Plate Layer http://earthquake.usgs.gov/regional/nca/virtualtour/kml/Earths_Tectonic_Plates.kmz
• Simple Line String
• Line String with Altitude Tessellate set to 1 prevents line from going through the surface of the earth.
• Extruded Line String Extruded set to 1 means line is extended to ground. Can be set to 0 or 1. Data type boolean.
• Line String with Style Parent tag; part of <Style> tag along with <BalloonStyle>. Can change <color> and <width>.
• Directions
• 1. Choose “Polygon” from the tool bar.
• 3. Choose “Color, Style” tab to change the line color or thickness.
• 4. Choose “Color, Style” tab to change fill color.
• 5. Choose the “Altitude” to change the height of the polygon.
• Creating Buildings with Polygons
• Directions
• 1. Use Earth to search for a vacant lot.
• 3. Change the color and style.
• 4. Change the altitude to adjust the height of the building.
• 5. Click “Extend to Ground”.
• Simple Polygon <Polygon> <outerBoundaryIs> <LinearRing> <coordinates> </LinearRing> </outerBoundaryIs> </Polygon> <PolygonStyle> <color>ffffffff</color> <ColorMode>normal </ColorMode> <fill>1</fill> <outline>1</outline> </PolygonStyle>
• Polygon with Holes Inner <Polygon> <outerBoundaryIs> <LinearRing> <coordinates> </LinearRing> </outerBoundaryIs> <innerBoundarIs> <LinearRing> <coordinates> </LinearRing> </innerBoundaryIs> </Polygon> Outer
• Making Letters in Earth Use Polygons with <outerBoundaryIs> and <innerBoundaryIs tags>.
• MultiGeometry Lets you add multiple geometric elements to a container, such as adding an icon over an polygon.
• 3D Models
• 3D Buildings is a built-in layer in the Google Earth primary database.
• Search Models by Type or Decade
• Major Categories
• Building Collections
• Featured Collections
• Popular Models
• Recent Models
• Models have the file extension x.dae
• Can search on the .dae extension in Google Search – http://search.google.com
• Files are based on the COLLADA standard, which stands for Collaborative Design Activity.
• Including Author and Source Information
• <?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?>
• <kml xmlns=http://www.opengis.net/kml/2.2
• xmlns:atom=&quot;http://www.w3org/2005/Atom &quot;>
• <Document>
• <atom:author>
• <atom:name>Thomas Cooper</atom:name>
• </atom:author>