| OpendTect User Documentation version 4.2 |
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In OpendTect, the user can preload seismics or horizons. The advantage is to quickly display these attributes on the scene. This requires enough memory.
The pre-load seismic data functionality is introduced inside the OpendTect to speed-up the working efficiency with large volumes. A common practice of displaying the seismic data (2D/3D) inside the OpendTect scene is to add an inline/crossline/2D line in the tree. Each time the line is displayed, the stored volume is read every time. Therefore, the seismic volumes that are routinely used, can be preloaded. On the other hand, if the same seismic data is pre-loaded, the efficiency of displaying the data in the scene is improved.
Seismic data can be pre-loaded in OpendTect by doing the following:
Go to Survey > Pre-load > Seismics...
Clicking on Seismics.., the pre-loaded manager pops- up to allow the user to Add data that will be pre-loaded.
Pre-load seismic data manager
Preload manager is used to load a 3D volume, 2D lines, 3D Pre-stack volumes or 2D Pre-stack lines in the memory. Additionally, after selected a pre-load data, the user can (optionally) save his/her settings for the later use.
Note: The functionality is available for all stored seismic (2D/3D-Pre/Post) data in the seismic data manager.
For fast visualizations, multiple horizons (2D/3D) can also be loaded in to the memory. Such that whenever the preloaded horizons would be displayed in the scene, the will take less time in reading the file from the disk. Therefore, the functionality improves the visualization speed. Press the 'Add .." button to select the desired horizons to be loaded in the memory. If you want to unload some horizons, select the horizons first and press 'Unload selected' button.
The Save and Open buttons are used to store/open the pre-loaded horizons setup for the later use.