| Issue | Solution | |-------|----------| | Elevation values are zero | Ensure terrain layer is on in Google Earth | | Coordinates are huge (lat/long) | Convert to UTM or local coordinate system | | AutoCAD says “Invalid point” | Check decimal separator (use . not , ) | | Profile looks flat | Verify elevation units (meters vs feet) – scale Z by 3.28 if needed |

AutoCAD creates graphs based on (X, Y) coordinates. For an elevation profile:

Set the output format to or CSV and the coordinates to UTM (Universal Transverse Mercator) to ensure they work in a standard CAD 1:1 scale. Download the converted file. 3. Format Data in Excel Open the file in Excel .

0.0 120.5 10.2 121.3 22.5 124.8 35.1 125.0

Now for the magic. We will use the LINE command in a clever way to plot this graph instantly.