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What grid spacing/grid resolution should I use in Surfer?

There is not one answer to fit all data sets. The grid spacing to choose will depend entirely on the spatial distribution of the data and your personal preference.

 

The default grid resolution is 100 grid lines in the longest direction. Increasing this may help if you have very dense data or data points very close together. 

 

Some examples:

  1. If you have LiDAR data or data that is already spaced out on a grid (or near-grid) pattern, you should use the Nearest Neighbor gridding method, and set the grid Spacing equal to that of the data points in the X and Y directions.
  2. If your data has very dense in some areas but sparse in other areas, use the spacing between the dense data points as the spacing for the grid nodes, otherwise their values and variations will be glossed over.

 

Updated January 31, 2017

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