The default grid resolution is defined by either the grid Spacing or the # of Nodes in the Output Grid Geometry section, in the Output page of the Grid Data dialog.
These fields are calculated as follows:
- 100 grid nodes are assigned to the longest direction.
- The grid Spacing for the longest direction is then calculated:
(Maximum-Minimum) / (# of Nodes – 1) - The same grid Spacing (or as close to it as possible) is applied to the shorter direction.
- The # of Nodes for the shortest direction is calculated:
((Maximum-Minimum) / Spacing) + 1
Note: If the # of Nodes in the shorter direction is not greater than 4, then the Minimum and Maximum values in that direction will be adjusted so that there are at least 4 grid nodes. This means that for data sets where one direction has a vastly different range than the other direction, the grid extents in the shorter direction may not exactly match the extents in the original data.
Updated March 2024
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