FAQ Visualization

Q: When I try to pick horizons the picks do not appear where they are picked, why is this happening and what is the solution?
A: Very likely you are using a 4K/8K screen and these screens are not yet fully supported in OpendTect. We are working on a fix.

We have found a few useful workarounds in the meantime that can resolve the offset pick/display issues until we have a satisfactory fix in place for supporting these screens.

Keeping the 4K (3840x2160) resolution but changing the scaling (from the default 250%) to 175% prevents offset on the primary screen in almost all of the cases we have so far encountered.

If using a second monitor, matching the two screens' resolution & scaling has been found to be a method allowing consistent picking between screens and monitors. (i.e.: moving the OpendTect UI between the two screens can be done without creating any offset issues.)

Q: OpendTect starts with a popup that scanned my graphics card and shows the warning message 'Intel card found. If your computer has multiple graphics cards, consider switching from the integrated graphics.'. How do I switch to the Nvidia card on Windows?
A: For a detailed guide on how to switch to the Nvidia card on Windows please read the following chapters from the OpendTect Administrator's Manual:

For Windows 8.1 and 10 up to feature release 2004: Setup the preferred GPU with NVIDIA Control Panel
For Windows 10 feature release 20H2 or newer: Setup the preferred GPU with Windows settings

Q: How do I rotate/zoom/pan the display?
A: There are many ways, depending on what you want. Usually, people use the thumb wheels and zoom slider to rotate all scenes, and the mouse+mouse buttons to interact with a single scene.

User Documentation Visualization

Q: I have loaded my data but the seismic sections display either black (3D) or red (2D). What can I do?
A: Most 3D display issues can be solved by the following two steps:

Update your graphics drivers to the latest version
Go to Utilities > Settings > Look and Feel... Switch off the relevant shading option and set the resolution to standard
Re-start OpendTect.

Please also take a look at our System Requirements page:

System Requirements

Q: Sometimes, especially on laptops and notebooks, or when using low resolution, some OpendTect windows will not fit properly into the screen and cannot be reduced in size. How do I get around this problem?
A: Resize the icons and the font sizes.