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Gradient Interpolation

Gradient Interpolation Tool

With the Gradient Interpolation Tool, elevations of your interpolated children Spot Levels are automatically calculated based on:

Start Gradient Interpolation

To use Gradient Interpolation:

  1. Go to:
    • LAND4/Group Palettes/Show Spot Level Palette, or
    • LAND4 Palette/Spot Levels
  2. Choose reference parent Spot Level.
  3. Press Gradient Interpolation button.
  4. Enter Fall Percentage value in Fall Palette.
  5. Place new, interpolated children Spot Levels in optional directions.
  6. To exit tool, press Esc.
Gradient Interpolation. Red circle marks parent Spot Level. Inserted Fall Lines to the new interpolated children Spot Levels show an identical fall gradient.

Fall Gradient

The Fall Percentage value entered in the Fall Palette can be:

  • positive = the z-value of the interpolated children Spot Levels will decrease the further away from the parent Spot Level they are placed.
  • negative = the z-value of the interpolated children Spot Levels will increase the further away from the parent Spote Level they are placed.

Positive Fall Gradient

When a positive Fall Percentage is set in the Fall Palette, the reference parent Spot Level will be the model’s highest point.

The height values of the various interpolated children Spot Levels will be inversely proportional to the distance from the parent Spot Level.

2D View
Gradient Interpolation. 2D view. Positive Fall Gradient (25,00 %). Red circle marks parent Spot Level. Blue dependency lines point from children towards parent.
3D View
Gradient Interpolation. 3D view. Positive Fall Gradient (25,00 %). Green crosses represents Spot Levels. Red circle marks parent Spot Level.

Negative Fall Gradient

When a negative Fall Percentage is set in the Fall Palette, the reference parent Spot Level will feature the lowest z-value of the model.

The height values of the various interpolated children Spot Levels will be directly proportional to the distance from the parent Spot Level.

2D View
Gradient Interpolation. 3D view. Negative Fall Gradient (-25,00 %). Red circle marks parent Spot Level. Blue dependency lines point from children towards parent.
3D View
Gradient Interpolation. 3D view. Negative Fall Gradient (-25,00 %). Green crosses represents Spot Levels. Red circle marks parent Spot Level.
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