🌳 How to Modify DSM and DTM in an Outdoor Project

🧭 Step 1: Open the DSM Menu

• In your outdoor project, open the DSM menu.
• Switch to 3D View to inspect the environment.
• You’ll be able to see:
  • Trees
  • Terrain elevation changes
  • Areas where the surface height varies

🌲 Step 2: Modify Tree Behavior

You have two ways to adjust trees:

1. Change the tree type
   • Update the balance between trunk and canopy
   • Adjust attenuation inside the canopy
2. Remove trees entirely
   • Use Modify DSM Heights
   • Draw a custom area around the trees
   • Set the height to 0
   • Click Save

This removes the trees from the selected area.

🔄 Step 3: Restore Original Trees

• To bring removed trees back:
  1. Go to Modify
  2. Select Reset to Original
• The original DSM data is restored.

📏 Step 4: Measure Terrain Changes

• Turn on Measurements to understand the existing terrain.
• This helps you identify:
  • Lowest elevation points
  • Height differences across the selected area
  • Areas that may need flattening or adjustment

✏️ Step 5: Flatten or Adjust Terrain

1. Draw an area over the part of the terrain you want to modify.
2. Review the existing elevation range.
3. Enter a new target elevation value.
4. Apply the elevation change.

The selected area will update to the new height.

🏞️ Step 6: Verify the Change

• After applying the new elevation, the terrain in that area becomes:
  • Flattened, or
  • Adjusted to the height you specified

Use 3D View to confirm the result visually.

🔁 Step 7: Reset Terrain to Original

• To restore the original terrain:
  1. Open the Modify options
  2. Select Reset Terrain
• The area returns to its original elevation profile.

✅ You can now use the DSM menu to control both vegetation and terrain elevation, making it easy to model cleared land, flattened surfaces, or updated site conditions.

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