Thread: Need help

Dear All -

This will do a relative normalization:

r 2016_309_1620_CU_SDDR.PRF.sac 2016_309_1620_CU_SDDR.TRF.sac
div (max (abs &1,depmax&) (abs &1,depmin&) (abs &2,depmax&) (abs &2,depmin&))
p1 ;* max amplitude is now one
p2 ;* relative plot

The div command normalizes the two traces, no matter what their names are. You could write a macro to read two files in them in and then normalize them, similar to this:

——contents of file “readnorm”--------
* SAC Macro to read two files and normalize the traces relative to one another
* m readnorm <file1> <file2>
read $1$ $2$
div (max (abs &1,depmax&) (abs &1,depmin&) (abs &2,depmax&) (abs &2,depmin&))
——contents of file “readnorm”————

and use it in SAC like this:

m readnorm 2016_309_1620_CU_SDDR.PRF.sac 2016_309_1620_CU_SDDR.TRF.sac
p2 ;* plot overlay of relatively scaled traces

On 26 Feb 2018, at 15:35, Sachin Tiwari <sachinism15<at>gmail.com> wrote:

Hi Sac Users,

I need some help. I have two sac traces which need to be normalized on same scale. Can any body provide me a script for accomplishing this task. Also, please find both the sac traces attached here. These are just the example traces, while I need to do the same job on several traces as well.

Thank you very much.

Regards,
--
Sachin Kumar
Junior Research Fellow (JRF)
Dept. of Applied Geophysics
Indian Institute of Technology (Indian School of Mines), Dhanbad
Jharkhand- 826004, India.
Mobile No.:+91-7631056163
Email : sachinism15<at>gmail.com , ismsachin<at>outlook.com
<2016_309_1620_CU_SDDR.PRF.sac><2016_309_1620_CU_SDDR.TRF.sac>
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