How to define cdpx and cdpy headers and define their byte locations (181,185). cdpx = (sx + gx)/2, cdpy = (sy + gy)/2,

[shahr...@gmail.com]

Dear all,

Please could you help me with the issue below.

The SEGY file contains cdp and cdpt headers. cdpx and cdpy headers are missing from the file. I need to define them and assign byte locations of 181 and 185.

I can edit an already existing header using suchw command but I am just struggling to define a new header.

Looking forward to hear from all experts of seismic unix. 

Kind regards,

Shahrukh