-
-
When reading ASCII text files, the import module (in NORSAR-2D or NORSAR-3D) gives error messages
Some of the modules reading the ASCII files do not support:
- the tabulation characters. Change them with blanks in any tex teditor and try again.
- the ^M characters produced if the ASCII file is written on a PC. Remove them using a text editor under UNIX or the dos2unix utility.
-
Export
-
How to export velocity cubes on SEG-Y format
Use File > Export > Model Gridder to make a velocity cube of your model. Then export the cube with File > Export > Cube Export.
-
How to export interfaces on ascii xyz grid format
There is no direct export feature for an interface in xyz representation, but there is an alternative way using the illumination maps. First a NORSAR3D ‘Eventset’ needs to be calculated in the NORSAR tracer (PP reflections for the interface which you want to export) then you can use this event set in the SMA (simulated migration amplitude) to calculate a SMA map.
In this process the interfaces will be resampled and thus the interfaces can be exported. While setting up the SMA you can underMapping surface geometry specify the sampling and dimensions of the desired grid. After the SMA is generated you can select under Export illumination map ASCII xyzf. Unfortunately you have to change the output by removing the SMA amplitude value afterwards, e.g., using awk '{print $1, $2, $3;}' grid.xyzf grid.xyz. That should provide you with the desired result. -
Grid Import
-
The "Analyze" function does not use the Inline/Xline information in the grid formats that contain explicit Inline and Crossline information (e.g. Landmark format)
Enter the Inline/Xline information of the grid manually.
-
Grid Utility
-
Smoothing error
In case of smoothing of grids with different increments (i.e. DX not equal to DY,) the smoothing will be stronger in the direction with the largest increment.
Resample the grid in Grid Utility to a more uniform sampling before smoothing. -
Problems in Adaptive Triangulation
Adaptive triangulation may fail in File;Store as Project Interface... for irregular or large grids.
Smooth the grid more or increase the Adaptive Triangulation Parameters.