How do I update restricted, locked, protected trace headers like offset, inline and cmp?
Insight is careful to protect the headers that determine the location of a trace. This can be frustrating when trying to correct or reposition data that was loaded incorrectly.
One solution is to export the data to SEG-Y and update the trace headers as they are exported. Once exported, reimport the SEG-Y to a new volume with the updated headers.
- In the Volume tab, right click the required volume and click Export...
- Select SEG-Y as the Format and click the Edit SEG-Y header button.
In this example, the offset header value in the SEG-Y file will be calculated using the formula:
- offset / 100
- Arbitrary custom headers (deviating from the SEG-Y standard) can also be specified as shown. In this case, the inline values will be shifted by 25 and the crossline header values will be doubled.