Hello Everyone,
Is there any command in SAC which can remove a particular header from a sac
file ?
Thanks,
Regards
--
*Mohit Agrawal
PhD Candidate | Research Assistant | Geophysics (Computational Seismology)
Dept. of Geology | Baylor University
Geophysics Lab, E453R | Baylor University Sciences Building (BSB) | Office:
E454R,BSB.
Phone- 254-710-2172 ( lab), 254-710-2155(office), 281-460-8941(Personal)
Email : mohit_agrawal<at>baylor.edu, ism21.mohit<at>gmail.com
Home Address : Apt # 207, 1500 s, 9th street, 76706, Waco, Texas, USA.*
Is there any command in SAC which can remove a particular header from a sac
file ?
Thanks,
Regards
--
*Mohit Agrawal
PhD Candidate | Research Assistant | Geophysics (Computational Seismology)
Dept. of Geology | Baylor University
Geophysics Lab, E453R | Baylor University Sciences Building (BSB) | Office:
E454R,BSB.
Phone- 254-710-2172 ( lab), 254-710-2155(office), 281-460-8941(Personal)
Email : mohit_agrawal<at>baylor.edu, ism21.mohit<at>gmail.com
Home Address : Apt # 207, 1500 s, 9th street, 76706, Waco, Texas, USA.*
-
I assume you mean that you want a header field to be "unset."
Look at the change header help file:
http://www.iris.edu/software/sac/commands/chnhdr.html, you will see
that subcommand UNDEF: Use this keyword instead of v to "undefine" a
header field.
Also, look at http://www.iris.edu/software/sac/manual/file_format.html
in the section that lists a "typical" header, you will see that the
"unset" value for an integer field is -12345 and similar values for other
variable types.
On Thu, 9 Aug 2012, mohit agrawal wrote:
Is there any command in SAC which can remove a particular header from a sac
file ?
-
Dear SAC users:
Currently if when I try to convert a passcal segy file into a sac file,
I get the following error:
ERROR in scale factor w/ gain =1 & scale = 0.0000000 e00.
I would like to change the scale_fac variable in the extended
segy-header of a passcal-segy file so that scale_fac=1
In the segymod.c file I read that all headers should be accessible.
I use the following syntax: segymod -scale_fac 100.01 segyfile.1
(I have been able to change some of the headers but not all. For
example, I can not modify samp_rate)
Ihave been able to read this passcal file in pql and also directly from
SAC. Should I instead modify the scale factor and set
the header values within SAC?
What do you advise?
Regards,
Juan Lorenzo