Voxel to Grids
Use the Voxel > Conversions > Voxel to Grids menu option (geogxnet.dll(Geosoft.GX.VoxUtils.VoxelToGrids;Run)*), to export a Geosoft Voxel to a set of grid files (Geosoft GRD).
Voxel to Grids dialog options
Input voxel file
|
Select the voxel file to be exported.
Script Parameter: VOXEL_TO_GRIDS.VOXEL
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Grid name prefix
|
Select the base name for the grid files. Each successive grid file
will have "_0", "_1", "_2", ... appended to the file name, corresponding to the
zero-based indices of the layers being exported.
Script Parameter:
VOXEL_TO_GRIDS.GRID
|
Destination folder
|
Select the destination folder for the grid files.
Script Parameter:
VOXEL_TO_GRIDS.OUTPUT_DIR
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Grid direction
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Specify the direction axis (X, Y, or Z) along which the voxel will be exported.
Script Parameter:
VOXEL_TO_GRIDS.DIRECTION (0: X, 1: Y, 2: Z)
|
Grid cell size
|
Ignore the voxel spacing and use the grid size specified in the text box.
See the note below about exporting from voxels where the cell sizes are
variable.
Script Parameter:
VOXEL_TO_GRIDS.CELLSIZE
|
Starting index
|
Starting index of the zero based layer (0 to N-1) position along the extraction axis.
Script Parameter:
VOXEL_TO_GRIDS.STARTINDEX
|
Index increment
|
By default, each layer, starting at the start index, is exported.
Select an increment larger than 1 in order to export a sparse sample of the
layers.
Script Parameter:
VOXEL_TO_GRIDS.INDEXINC (default: 1)
|
Number of grids
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Maximum number of grids to generate. The actual number exported
will be limited by the starting index, index increment, and the total number of
layers in the export direction.
Script Parameter:
VOXEL_TO_GRIDS.NGRIDS
|
Interpolation method
|
Specify the interpolation method to use (Linear or Nearest) when
creating the grids. This applies in cases where the cell size is specified and
is different from the spacing in the exported layers, or when the cell size is
variable.
Script Parameter:
VOXEL_TO_GRIDS.INTERP ("L": Linear (default); "N": Nearest)
|
Display option
|
Specify how generated grids should be displayed (in the current map, as individual grid files, or not displayed.
) A warning with a yes/no response is presented if you have indicated
display to the current map or to grid windows, and more than 20 grids are about
to be generated.
Script Parameter:
VOXEL_TO_GRIDS.DISPLAY (C: Current map, D: Display in grid windows, X: Do not
display (default))
|
Colour method
|
Specify the colour method to use for the generated grids.
Script Parameter:
VOXEL_TO_GRIDS.COLOUR_METHOD (0: Default (default), 1: Linear, 2: Normal
distribution, 3: Histogram equalization (equal area), 5: Log-linear, 6: As last
displayed)
|
Colours
|
Select the colour scheme for rendering the image of the grids. If you mouse over the colour scheme entry, a tooltip will display the name of the colour table in its folder. To modify the selection, click on the colour entry and then navigate through the scheme categories.
Script Parameter:
VOXEL_TO_GRIDS.COLOUR_TABLE
|
Application Notes
*The GX tool will search in the "...\Geosoft\Desktop Applications \gx" folder. The GX.Net tools, however, are embedded in the geogxnet.dll 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" folder, then supply the GX.Net tool in the specified format.
Variable Cell Sizes
Since a voxel may have variable cell sizes but a grid has only a fixed cell size, the smallest cell size in both directions orthogonal to the extraction axis are used for the grid cell X & Y separation. The
grid data values are then interpolated using the selected interpolation method.