Configure the Automatic FFT Setup
In default (Automatic) mode, GM-SYS 3D expands all grids inside the calculation routine each time it runs and then "masks" back to the original size at the end of the calculation. Internal expansion/filling works best for grids that have zero trend, using the default values.
Configure the Automatic FFT Setup
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On the Settings menu, select Automatic FFT Preparation. The Automatic FFT Preparation dialog appears.
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Enter the Minimum Percentage to Expand Grids. Grids will be expanded by at least this percentage of their original size in preparation for FFT. The default is 50%
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From the drop-down list, select the Shape of Output Grids (square or rectangle). The default is rectangle.
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Click OK. The requested changes are made.
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