Michael Lu's Blog

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1. IMPORT GOOGLE EARTH AREAS INTO SKETCHUP.

2. TOGGLE TERRAIN ‘ON’

3. EXPORT 3D MODEL AS *.3Ds.

4. IMPORT INTO RHINO

5. SELECT SURFACE (IF MULTIPLE SELECT ALL SURFACES) AND ‘PATCH’ (FOR U AND Y TYPE 200)

5. DRAW VERTICAL LINE THROUGH HIGHEST POINT OF TOPOGRAPHY (TOGGLE B/W PLAN AND ELEVATION VIEWS TO CENTER.

6. TYPE ‘CONTOUR’ COMMAND (FOR BASE POINT CHOOSE BOTTOM OF VERT LINE, THEN SELECT TOP OF VERT LINE)

7. FOR INTERVALS CHOOSE DISTANCE DESIRED BETWEEN CONTOURS (I USE 10′ IN THIS CASE)