Topic:
Irregularly shaped inclusive data boundaries or AOI's do not limit grid extents.

Description:
Created an irregularly shaped inclusive data boundary (following fault
boundaries) for use in BasemapPlus gridding.  After gridding is completed the
resultant grid extends beyond (bleeds over) the boundary or AOI.    

Solution:
Neither the inclusive data boundary nor the Area of Interest (AOI) give
expected results when they are created as irregularly shaped polygons.  These
polygons limit grids best when they have a more regular (rectangle) shape.

For irregularly shaped areas, use the "Clipping Surface" option to limit the
area covered by the resultant grid.  For similar gridding parameters with the Clipping Surface boundary option or the Inclusive Data Boundary option, the
grid is better constrained within the "Clipping Surfae Boundary, with few or no
extentions of the grid beyond the boundary.

See also:
Why is gridded surface interpolating beyond fault boundaries in Basemap Plus?
How to use an Input Data Boundary for gridding.
What is the difference between Clipping Surface and Inclusive Data boundaries?




Last Modified on: 27-NOV-00