Presentation used in EnviroInsite training to describe contouring methodology and tips for creating high-quality three-dimensional contours.

1. 3d Contouring
EnviroInsite Training Workshop
January 2012

2. 3d Contouring
1
1.5
1. Select Data
2.1
2.7
2. Create 3d Grid
3
3.9
4
5.1
7.0
7
4.2
5.7
7.5
4.2
3. 3d Interpolation
6.5
6
8.2
4. Contour Shells
9
Similar to 2d, but no polyline bounds
3d Contouring

3. 3d Contouring Hints
• Can “slice” into
contour shells by
modifying grid extent
• Inverse distance
seems to create
smoother contours
• Z-Scale parameter in
inverse distance
reduces vertical
spreading
3d Contouring

4. Volume / Mass Calculation
• EI Evaluates volume
within each contour
interval
• Monte Carlo integration
• Mass = C x V x porosity
3d Contouring

5. Draped Image
• Image draped to
either:
 Ground Surface
defined at wells
 Set of X,Y,Z points
(DEM data)
3d Contouring

6. 3d Contouring
Hands-on exercise