Topic:
Can I insert control points to guide gridding in GeoFrame 3.5?

Description:
I have several areas with no data where I would like to insert control points.      

Solution:
Here is how you would create a grid using your seismic values and control 
points.

1. Post the interpretation you want to grid, grid it, and go to 
   Grid > Save As..., toggle on "Save input data points to scatter set", 
   give the scatter set a name, and click OK.  Give the grid  and Contour Set
   names if you want to save them.  If you do not, just leave the names blank
   and answer "No" to the Confirmation boxes that come up after you click "OK".

2. Using a text editor, create a 3 column file containing the X, Y and time of
   each control point you want to use.

3. Load the file as a scatter set with ASCII Load, making sure the control
   file specifies the correct Property Code (usually "Time") and Property unit
   (in this case "ms").  When you have defined the control file, specify the
   Target Surface (the one you just gridded in Basemap), and click Run.
   This will load a new scatter set into your surface.

4. Back in Basemap, under Post > Interpretation, toggle on Scatter Sets,
   and select both of the scatter sets you have just created for posting.

5. Go to Gridding > Input Data > and under "Input data types", select Scatter
   Sets, and click OK.  Now select your gridding parameters, and the resultant
   grid will be the product of both your interpretation and the control points.






Last Modified on: 05-AUG-99