Topic:
How to create an isochron map.

Description:
 MapView can geneate isochrons from xyz data or from grids.

Solution:
To generate isochrons from xyz data:

1.) Read in both horizons.
 
2.) XYZ operations > Combine.
   - Toggle XYZ operation to subtract.
   - Toggle Input points to List.
   - Key in a resultant surface name.
   - Toggle Yes if either horizon has fault traces you want to keep.
   - Exit.
   - Select shallowest xyz horizon.
   - Answer yes to the make current data question.
   - Select deepest xyz horizon.
   - Answer yes to the make current data question.
         (Selecting shallowest first generates positive values.)
 
3.) Select contour icon to display.
 


To generate isochrons from grids:
  
1.) Grid both horizons.
 
2.) Grid operations > Combine.
   - Toggle Grid operation to subtract.
   - Toggle Input points to List.
   - Key in a resultant surface name.
   - Toggle fault, extent, and null handling as desired
   - Exit.
   - Select shallowest horizon.
   - Answer yes to the make current data question.
   - Select deepest horizon.
   - Answer yes to the make current data question.
         (Selecting shallowest first generates positive values.)
 
3.) Select contour icon to display.
 






Last Modified on: 04-AUG-98