Working with Terrain and Contours

Working with Terrain and Contours

 Terrain_drop-down_list.jpg

 

Use this dropdown menu when you want to import terrain information from Google Earth into your AutoCAD project and create contours/surfaces from it. A grid of three-dimensional points of customizable density will be created in AutoCAD and contours will be drawn based on that data set. Select:

 

terrain_current_view_16.png    Terrain from Current View        To fetch terrain data from the area Google Earth is currently displaying
terrain_grid_16.png Terrain on Grid   To fetch terrain data into a specified grid
terrain_area_16.png  Terrain on Area   To fetch terrain data into a specified polygonal area

 

Note: For optimal accuracy we recommend that the Google Earth eye altitude is set to 3km (10,000ft) or lower when using any of these functions and that a 30m x 30m (100ft x 100ft) grid is created.

 

Terrain from Current View

 

Step 1: Select the Terrain from Current View command from the dropdown menu

 

Terrain_from_Current_View_1.jpg

 

You will be prompted to input the number of points to be generated in the grid and then Plex.Earth will import terrain infrormation for the area currently displayed inside your Google Earth window. When the process has been completed you will be prompted to choose whether you want to create a surface (TIN) and/or contours from the imported points.

 

Step 2: The terrain grid, along with optional surface/contours has been created

 

Terrain_from_Current_View_2.jpg

 

Τerrain on Grid

 

Step 1: Select the Terrain on Grid command from the dropdown menu

 

Terrain_on_Grid_1.jpg

 

 

Step 2: Define the grid that will be created

 

Terrain_on_Grid_2.jpg

 

You will be asked to input the following parameters:

 

Grid Base Point: The bottom left corner of the grid.

Grid Rotation: The orientation of the grid.

Grid X spacing: The density of the grid along the X axis.

Grid Y spacing: The density of the grid along the Y axis.

Upper right location: The upper right corner of the grid.

 

You will be prompted to input the number of points to be generated in the grid and then Plex.Earth will import terrain infrormation for the area currently displayed inside your Google Earth window. When the process has been completed you will be prompted to choose whether you want to create a surface (TIN) and/or contours from the imported points.

 

Step 3: The terrain grid, along with contours has been created

 

Terrain_on_Grid_3.jpg

 

 

 

Terrain on Area

 

Step 1: Select the Terrain on Area command from the dropdown menu

 Terrain_on_Area.jpg

 

 

Step 2: Define the area in which the grid will be created

 

Terrain_on_Area_2.jpg

 

You will be asked to input the following parameters for the underlying grid:

 

Grid Base Point The bottom left corner of the grid.

Grid Rotation: The orientation of the grid.

Grid X spacing: The density of the grid along the X axis.

Grid Y spacing: The density of the grid along the Y axis.

Upper right location: The upper right corner of the grid.

 

You will be prompted to input the number of points to be generated in the grid and then Plex.Earth will import terrain infrormation for the area currently displayed inside your Google Earth window. When the process has been completed you will be prompted to choose whether you want to create a surface (TIN) and/or contours from the imported points.

 

 

Step 3: The terrain grid, along with contours has been created

 

Terrain_on_Area_3.jpg

 

 

 

 

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