Surface Web Elevations

Creates a surface (or insert/export points) on a grid interval with the elevations returned by the Bing, Google, MapZen, or the USGS Elevation Service.

Keyboard Command: SurWebElv

There are two methods of generation:

1. The first (Tile Grid) uses elevation tiles (grid of points) that are downloaded. Since the points are pre-determined and are in lat/lon coordinates, the results are a TIN or a non-ortho mesh.
2. The second (Ortho Grid) collects elevations at points determined by the interval and window you choose and generates an ortho grid. Tile Grid with a zoom of 15 is recommended. This function requires an active Internet connection.

Procedure:

1. Open the drawing you plan to generate data in.
2. Assign a coordinate system to the drawing if not already done.
3. Initiate this tool from the menu, ribbon or command above.
4. Choose the method to use (based on information in the first paragraph above).
5. Optionally change the elevation web server (if applicable).
6. Optionally change the process interval values (if applicable).
7. Click the < Pick button to designate the process area.
8. Confirm the point count is acceptable (if applicable) echoed at the command prompt.
9. Designate whether to create a surface, mesh object, create points or a point file.
10. Enter additional parameters as needed.
11. Choose the OK button to begin processing.

Server Notes:

Tile Grid:

The source data for the tile grids was aggregated by Mapzen and is hosted by Amazon Web Services. Higher zoom levels provide better results.