Also the volume element has a similar pop-up menu (see below) as described in previous section. Each option is described briefly in the following paragraph.
Select attribute: Select/change the data in a volume.
Duplicate: Create a duplicate/copy of the sub-volume.
Reset Manipulation: Reset the changes made in the position of the sub-volume. This option is only available if the user has made any changes.
Properties: Change display parameters such as transparency and ambiance reflectivity.
Position: Change the inl/xline/Z position within the survey boundaries.
Show Histogram: Display data statistics (selected attribute) of defined volume as histogram in pop up window.
Show Amplitude Spectrum: Pop-up amplitude vs frequency plot.
Add: Add new inline/crosslilne/time slices or an iso surface to the selected sub-volume.
Add isosurface:. Compute arbitrary isovalue surfaces and convert them into bodies.
if the option Set Isosurface is chosen, the following window pops up:
The window displays the histogram of the data collected within the loaded volume (left), or from seeds only that are stored in a pickset (right). "Update" will update the display in the 3D scene (requires some computation time) while leaving the window open. OK will accept the currently selected (or updated) value and dismiss the selection window.
Right-click to display the isosurface menu and convert the isosurface into a stored body that in turn can be retrieved:
Save volume file: Save the volume file in the *.vol format
Lock / Unlock: Lock the selected object. Prevent accidental removing, moving or displaying of data on the object. After clicking "unlock" editing is again enabled.
Remove: Removes the element from the display.
Note: Within a volume Inline, Crossline, Time and Volren (see above), exist as sub-elements. These elements can be toggled On/Off by checking/unchecking the box in the tree. Moreover, the multi-volumes display also consumes memory. The best practice is not to load seismic data that is beyond any hardware limitations. Add volume visualizations depending upon the system compatibilities.
Volume rendering: When the Volren is toggled on, the volume rendering is activated and this requires computation. A bar appears to show the progress of the volume rendering preparations. Once finished the volume is best viewed with a color bar that is translucent (see Color Tables section), highlighting only values of interest (e.g. only high chimney probability values in a ChimneyCube).
In Interact mode, (Table 2-1) the cursor will return the position (inline, cross-line and X,Y,T) and the data value at that position in the horizontal status bar of the OpendTect window.