The grid adjustment and evaluation feature adjusts grids (surfaces). The adjustment is based on a grid order, min and max distance between grid pairs, and max allowed grid adjustment. This type of adjustment is often applied in hydro stratigraphic modeling.
The method does not change the existing grids but produces a new set of grid files. In addition, a set of grids containing the amount of adjustment for each grid and a set of isopach grids for the resulting layer thicknesses can be generated after adjustment.
This feature works directly on the entire source grid files - not only within scene extent.
Only Surfer grid files and ASCII grid files are supported. All grid files must be online.
Adjustment
Creates or updates a set of grid files based on the adjustment setup. The adjusted grid files will be added or updated as surfaces in the Object Manager.
Postfix: Post fix used for new object group and generated grid files.
Setup / Execute: Shows the Grid Adjustment dialog and performs the grid adjustment.
Generate Difference Grids
Creates or updates a set of grid files containing the amount of adjustment in each grid. These grid files are not added as objects in the Object Manager but can be added manually to a map.
Postfix: Post fix used for generated grid files.
Execute: Generates difference grid files.
When generating a difference grid, the value given for each grid cell is ‘taken’ from the grid node in the top left corner.
The calculated value is the difference between the ‘original’ grid and the adjusted grid.
The difference grid can give information about were small and/or large difference between the ‘original’ and adjust the grid exist.
See more about grid definitions here.
Generate Isopach Grids
Creates or updates a set of grid files containing the resulting layer thicknesses. The thickness is calculated as the distance to the grid file above. These grid files are not added as objects in the Object Manager but can be added manually to a map.
Postfix: Post fix used for generated grid files.
Execute: Generates difference grid files.