3D Direct Gridding
Use the Voxel > New > Direct Gridding menu option (geogxnet.dll(Geosoft.GX.VoxUtils.VoxelDirectGridding;Run)*), to create a voxel file from a channel in a database.
3D Direct Gridding dialog options
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 Channel to grid
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Select a channel to grid from the list. Current X, Y and Z channels are required. The data channel may be an array channel, as long as the Z channel is also an array channel with the same number of columns, with the individual values in the Z channel columns corresponding to the individual data values in the data channel columns.
Script Parameter: 3D_DIRECT_GRIDDING.CHANNEL
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Output voxel name
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Choose a file name for the output voxel.
Script Parameter: 3D_DIRECT_GRIDDING.VOXEL
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Cell value
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Individual grid cell values are assigned using the selected statistic on all data values falling within that cell. Selections include the minimum, maximum, and mean value and the number of valid (non-dummy) items in a cell.
Script Parameter: 3D_DIRECT_GRIDDING.GRID_VALUE (Minimum: 0, Maximum: 1, Mean: 2, Number of items: 3, Default: 2)
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Set zero values to dummies
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This option is only valid for the “Number of items” selection under “Cell value”. If checked, then those cells for which no data values were found are given dummy values, so they will not show up when the voxel is displayed.
Script Parameter: 3D_DIRECT_GRIDDING.DUMMY_ZEROS (0: No, 1: Yes, Default: 1)
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Cell size
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Choose a horizontal (X and Y) cell size for the output voxel. The calculate button determines a default cell size which will give approximately one thousand voxel point locations, after calculating the bounding volume of the data, and assuming the vertical (Z) cell size is the same as the horizontal cell size.
Script Parameter: 3D_DIRECT_GRIDDING.CELLSIZE
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Cell size for Z
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By default, the vertical cell size is chosen to be the same as the horizontal cell size.
Script Parameter: 3D_DIRECT_GRIDDING.CELLSIZEZ
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Application Notes
*The GX.NET tools are embedded in the geogxnet.dll file located in the "...\Geosoft\Desktop Applications \bin" folder. If running this GX interactively, bypassing the menu, first change the folder to point to the "bin" directory, then supply the GX.NET tool in the specified format. See the topic for more details on running a GX.NET interactively.
The Direct Gridding method is most suited to highly sampled data, such as GPR, LiDAR or seismic data. It does not apply any splinning to the input data as it assumed that the data is over-sampled. Voxel elements that do not host any observed data are assigned a dummy value.
The yellow asterisk icon () displayed in front of a parameter name indicates that this parameter is required.
