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Grid Properties Dialog - Advanced Options Tab Specifying advanced 3D grid options for a 3D window |
Grid Properties Dialog - Advanced Options Tab
To access this dialog:
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In theGrid Propertiesdialog, select theAdvanced Optiontab.
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A Datamine eLearning course is available that covers functions described in this topic. Contact your local Datamine office for more details. |
This tab is used to define advanced formatting options for 3D grids, the coordinate system used, whether the grid will extend to the boundaries of the screen, or a specified distance, as well as options for grid labelling.
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The settings described here apply to the currently active 3D window and all linked external windows. Independent windows will be unaffected. |
Field Details:
Grid
Type: this drop-down list allows you to apply a 3D hull or
section grid to the current object in the active 3D window. When
you click Apply
in the Grid Propertiesdialog, the selected grid is displayed
with the active object in the active 3D window.More...
The following options can be selected:
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[3D Hull]
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[Active Section]
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[Section name]
Display
Mode:this drop-down list allows you to configure the display
of the grid relative to the object in the active 3D window. More...
The following options can be selected:
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[Normal]
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[Show Hidden Lines]
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[Always on Top]
Use Local Coordinates: grids can be defined using world or local coordinate systems; a world coordinate system is one that has a definitive origin that does not relate to any particular object in memory - in this situation, all grid values will be relative to a common origin. If this check box is selected, a local coordinate system will be used instead, which allows you to determine another point to be used as an origin - this will be in relation to the world coordinate origin.
The “World” and “Local” settings are just used to specify the coordinates of a known point in world coordinates and local coordinates. For example, a collar might be at (1000,2000,250) in world coordinates, and at (0,0,0) in local coordinates, which would result in the grid origin being at the collar position. Or if the local coordinates for the collar were (0,0,250) then the grid origin would be 250 units below the collar position. For more information on local and world coordinate systems, see Understanding Coordinate Systems.
You can define a local coordinate system in one of two ways. You choose the method using the Track to section check box:
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Define the local and world coordinate common point manually
Define two sets of XYZ positions: the first is the position in space to locate your world origin, for example, 0, 0, 0, and the second set of digits dictates the distance and direction from this point that will become the local origin. This is not the same as setting a new world origin.
This method is used if the Track to section check box is disabled. -
Inherit the local coordinates from the current section definition
With this approach, the grid is tied to the default or active section (whichever is selected in the Grid Type drop-down list - the Track to section option is not available for 3D Hull type grids). The grid will then always display local coordinates where the actual values will depend on the Local XYZ values specified (default 0, 0, 0).
With this method, local coordinates will be inherited from the current section definition, so you won't need to define the common World point coordinate, or the Azimuth/Dip settings
This method is used if the Track to section check box is enabled.
Track to Section: determines how a local grid coordinate system is applied. See above for more information.
Local Origin: only available if Track to Section is enabled for an Active Section. This lets you decide where the local origin (0,0,0) for a grid will be positioned on the section. You can either choose from some preset positions using the drop down list (Centre, Top Left, Bottom Right etc.) or you can select [Manual] and use the Local and Scale options (see below) to manually define the position and scale of the origin in local coordinates.
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When World and Local origin points (the 'common point' defining the positional relationship between world and local origins) are defined and you are not using the Track to section option, you can configure details about how the local coordinate system is calculated, using the following properties:
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Scale 1:N: set the coordinate system scale. For example, if the map was at a scale of 1:1000, this would mean that 1 unit on the grid would represent 1000 units in the world. Note that the interval, local point and constraints settings are all in local coordinates so if you change the scale you may want to change these settings also.
This option is available for all grid types if the Use Local Coordinates option is enabled, regardless of the Track to section and Local Origin settings. -
Azimuth and Dip: set the alignment of the local coordinate system grid, in relation to the world system orientation.
Contraints: this section allows you to constrain the extents of the grid periphery for 3D hulls, or 'snap' the grid to fit neatly around any visual object in memory. These options are only available if a 3D Hull grid type is being defined, and the Snap to hull option is disabled.
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Minimum XYZ: set the minimum values in the relevant axis/axes. Grid intervals will not be shown before the specified location(s).
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Maximum XYZ: set the maximum values in the relevant axis/axes. Grid intervals will not be shown beyond the specified location(s).
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Snap to hull: this check-box allows you to select an object to snap to, from the drop-down list below it. You can then edit the Minimum and Maximum fields to manually override hull extent values. It is automatically selected when defining a 3D hull grid.
If Snap to hull is enabled, you can choose to wrap the grid around all of your data, or a specific data object using the drop-down list provided. All loaded 3D objects are listed.
Labels: define your own text prefix and/or suffix for grid labels using the text boxes provided. Values can be defined independently for each axis.
