3d Contouring

EnviroInsite Training Workshop

January 2012

3d Contouring

3d Contouring

1. Select Data

2. Create 3d Grid

3. 3d Interpolation

4. Contour Shells

1

4

3

6

7 9

5.7 6.5

1.5 2.1 2.7

3.9 4.2 4.2

5.1

7.0 7.5 8.2

Similar to 2d, but no polyline bounds

3d Contouring Hints

3d Contouring

• 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

Volume / Mass Calculation

3d Contouring

• EI Evaluates volume within each contour interval

• Monte Carlo integration

• Mass = C x V x porosity

Draped Image

3d Contouring

• Image draped to either:

Ground Surface defined at wells

Set of X,Y,Z points (DEM data)

3d Contouring

Hands-on exercise