Hi,
If you want DEPMAX and DEPMIN for normalization only, why don't you write
it to a blackboard variable and just divide?
Something like this;
SETBB normamp (MAX (ABSOLUTE &1,DEPMAX) (ABSOLUTE &1,DEPMIN))
DIV %normamp
Januka
Januka Attanayake
Research Fellow/Lecturer | Earthquake Seismology Lead
Homepage: *
https://sites.google.com/site/janukaattanayake
https://sites.google.com/site/janukaattanayake*
School of Geography, Earth & Atmospheric Sciences
University of Melbourne | Parkville 3010 VIC
Australia
On Sat, 18 Sept 2021 at 22:41, Onur Tan (via IRIS) <
sac-help-bounce<at>lists.ds.iris.edu> wrote:
Hi,
I use sac v102.0 (64bit) on Kubuntu v16 (64bit) .
After FFT of a squared waveform (amplitude unit is count), the maximum and
minimum values on the header are
FILE: 1-SAC/a.sac - 1
--------------------
DEPMAX = 1.441192e+13
DEPMIN = 7.639150e+07
NVHDR = 7
However, I give the following command
message " max-min &1,DEPMAX &1,DEPMIN "
max-min -2147483648 76391496
The maximum number is not true, so I cannot normalize the data.
The value of the &1,DEPMAX is the limit of 32bit-number (2^32)/2
Do you have any suggestions?
Best regards
Onur Tan
PS. Here is the sac binary
bin> file sac
sac: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically
linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32,
BuildID[sha1]=e8e1bcc88c9c35a7d485a1c78c1f93da6793deee, not s
tripped
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Onur Tan
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