SAGE: Thread: ASCII to SAC

Started: 2009-11-04 23:49:36

Last activity: 2017-06-13 14:37:34

Topics: SAC Help

Geo .

ASCII to SAC

2009-11-04 23:49:36

Hello everyone,
I have a time series of synthetic traces and would like to convert them to
SAC format. I know I could use the CONVERT function but before that I have
to format the ASCII (time series) file by arranging the values for sac
header. Is there a utility to do this pre-formatting before I could use the
CONVERT function?
ex. I believe my ASCII file should look like the following before using
CONVERT
0.125 -7441.313 4087.937 1 -12345
-12.73499 4.265015 -1145.083 -0.7329407 2
-7.154175 -11.04712 -5.158936 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 49.69189 11.22172 499.5 0
-18.58 -177.847 -12345 406800 6.3
153.6304 92.23995 118.4234 -12345 -12345
-12345 -12345 -12345 -12345 -12345
16459.75 348.8256 16.44247 148.1168 -12345
-12345 11.20899 0 0 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
2007 8 21 11 25
723 6 0 0 137
-12345 3 -12345 -12345 -12345
1 7 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
1 0 1 1 0
GRA1 -12345
-12345
PKP PKIKP PKiKP
-12345 -12345 -12345
-12345 -12345 -12345
-12345 -12345 -12345
-12345 -12345 BHZ
GR -12345 -12345
-187.3201 -188.5614 -217.869 -206.1952 -207.0166
-215.3447 -195.2354 -180.3634 -132.7042 -73.69939
-41.64182 20.88158 27.19209 49.59732 147.0182
84.607 63.40969 54.25536 80.00433 81.05703
88.90465 90.763 85.95925 49.39476 22.92792
-49.27525 -137.7821 -148.9169 -235.7549 -260.8252
-287.5518 -289.338 -262.7619 -247.1613 -195.9543
-143.929 -87.96223 -55.86754 42.96152 41.11675
88.47706 110.7524 203.3549 248.1527 288.513
289.4476 425.0559 414.4856 489.2326 529.2755
708.3331 979.9971 1099.924 1216.979 1358.369

I am not sure how I could get the values related to sac header organized (a
program?). Any ideas?

Thank you very much.

Januka.
--
"Nothing can start to exist nor can cease to exist, only transformation is
possible"

Januka Attanayake
Solid Earth Geophysics & Economics
University of Connecticut
Beach Hall U-2045
354,Mansfield Rd;
Storrs.CT 06269

Tel: 1 860 486 0475
URL: http://sites.google.com/site/janukaattanayake/

Arthur Snoke

Re: ASCII to SAC

2009-11-05 00:10:28

You do not have to construct a SAC header from scratch. SAC has
subroutines that can be called in C or Fortran programs that put things in
the right place. In SAC, enter

SAC> help tutorial

and read the section on reading and writing data files.

On Wed, 4 Nov 2009, Januka Attanayake wrote:

Hello everyone,
I have a time series of synthetic traces and would like to convert them to
SAC format. I know I could use the CONVERT function but before that I have
to format the ASCII (time series) file by arranging the values for sac
header. Is there a utility to do this pre-formatting before I could use the
CONVERT function?
ex. I believe my ASCII file should look like the following before using
CONVERT
0.125      -7441.313       4087.937              1         -12345
-12.73499       4.265015      -1145.083     -0.7329407              2
-7.154175      -11.04712      -5.158936         -12345         -12345
-12345         -12345         -12345         -12345         -12345
-12345         -12345         -12345         -12345         -12345
-12345         -12345         -12345         -12345         -12345
-12345       49.69189       11.22172          499.5              0
-18.58       -177.847         -12345         406800            6.3
153.6304       92.23995       118.4234         -12345         -12345
-12345         -12345         -12345         -12345         -12345
16459.75       348.8256       16.44247       148.1168         -12345
-12345       11.20899              0              0         -12345
-12345         -12345         -12345         -12345         -12345
-12345         -12345         -12345         -12345         -12345
2007         8        21        11        25
723         6         0         0       137
-12345         3    -12345    -12345    -12345
1         7    -12345    -12345    -12345
-12345    -12345    -12345    -12345    -12345
-12345    -12345    -12345    -12345    -12345
-12345    -12345    -12345    -12345    -12345
1         0         1         1         0
GRA1     -12345
-12345
PKP     PKIKP   PKiKP
-12345 -12345 -12345
-12345 -12345 -12345
-12345 -12345 -12345
-12345 -12345 BHZ
GR      -12345 -12345
-187.3201      -188.5614       -217.869      -206.1952      -207.0166
-215.3447      -195.2354      -180.3634      -132.7042      -73.69939
-41.64182       20.88158       27.19209       49.59732       147.0182
84.607       63.40969       54.25536       80.00433       81.05703
88.90465         90.763       85.95925       49.39476       22.92792
-49.27525      -137.7821      -148.9169      -235.7549      -260.8252
-287.5518       -289.338      -262.7619      -247.1613      -195.9543
-143.929      -87.96223      -55.86754       42.96152       41.11675
88.47706       110.7524       203.3549       248.1527        288.513
289.4476       425.0559       414.4856       489.2326       529.2755
708.3331       979.9971       1099.924       1216.979       1358.369

I am not sure how I could get the values related to sac header organized (a
program?). Any ideas?

Thank you very much.

Januka.
--
"Nothing can start to exist nor can cease to exist, only transformation is
possible"

Januka Attanayake
Solid Earth Geophysics & Economics
University of Connecticut
Beach Hall U-2045
354,Mansfield Rd;
Storrs.CT 06269

Tel: 1 860 486 0475
URL: http://sites.google.com/site/janukaattanayake/
- Yannik Behr
  
  Re: ASCII to SAC
  
  2009-11-05 19:01:28
  
  We've developed a python package called obspy
  (http://svn.geophysik.uni-muenchen.de/trac/obspy) that allows you
  creating SAC-files from a raw timeseries in python.
  
  Cheers,
  Yannik
  
  Arthur Snoke wrote:
  
  You do not have to construct a SAC header from scratch. SAC has
  subroutines that can be called in C or Fortran programs that put things in
  the right place. In SAC, enter
  
  SAC> help tutorial
  
  and read the section on reading and writing data files.
  
  On Wed, 4 Nov 2009, Januka Attanayake wrote:
  
  Hello everyone,
  I have a time series of synthetic traces and would like to convert them to
  SAC format. I know I could use the CONVERT function but before that I have
  to format the ASCII (time series) file by arranging the values for sac
  header. Is there a utility to do this pre-formatting before I could use the
  CONVERT function?
  ex. I believe my ASCII file should look like the following before using
  CONVERT
  0.125 -7441.313 4087.937 1 -12345
  -12.73499 4.265015 -1145.083 -0.7329407 2
  -7.154175 -11.04712 -5.158936 -12345 -12345
  -12345 -12345 -12345 -12345 -12345
  -12345 -12345 -12345 -12345 -12345
  -12345 -12345 -12345 -12345 -12345
  -12345 49.69189 11.22172 499.5 0
  -18.58 -177.847 -12345 406800 6.3
  153.6304 92.23995 118.4234 -12345 -12345
  -12345 -12345 -12345 -12345 -12345
  16459.75 348.8256 16.44247 148.1168 -12345
  -12345 11.20899 0 0 -12345
  -12345 -12345 -12345 -12345 -12345
  -12345 -12345 -12345 -12345 -12345
  2007 8 21 11 25
  723 6 0 0 137
  -12345 3 -12345 -12345 -12345
  1 7 -12345 -12345 -12345
  -12345 -12345 -12345 -12345 -12345
  -12345 -12345 -12345 -12345 -12345
  -12345 -12345 -12345 -12345 -12345
  1 0 1 1 0
  GRA1 -12345
  -12345
  PKP PKIKP PKiKP
  -12345 -12345 -12345
  -12345 -12345 -12345
  -12345 -12345 -12345
  -12345 -12345 BHZ
  GR -12345 -12345
  -187.3201 -188.5614 -217.869 -206.1952 -207.0166
  -215.3447 -195.2354 -180.3634 -132.7042 -73.69939
  -41.64182 20.88158 27.19209 49.59732 147.0182
  84.607 63.40969 54.25536 80.00433 81.05703
  88.90465 90.763 85.95925 49.39476 22.92792
  -49.27525 -137.7821 -148.9169 -235.7549 -260.8252
  -287.5518 -289.338 -262.7619 -247.1613 -195.9543
  -143.929 -87.96223 -55.86754 42.96152 41.11675
  88.47706 110.7524 203.3549 248.1527 288.513
  289.4476 425.0559 414.4856 489.2326 529.2755
  708.3331 979.9971 1099.924 1216.979 1358.369
  
  I am not sure how I could get the values related to sac header organized (a
  program?). Any ideas?
  
  Thank you very much.
  
  Januka.
  --
  "Nothing can start to exist nor can cease to exist, only transformation is
  possible"
  
  Januka Attanayake
  Solid Earth Geophysics & Economics
  University of Connecticut
  Beach Hall U-2045
  354,Mansfield Rd;
  Storrs.CT 06269
  
  Tel: 1 860 486 0475
  URL: http://sites.google.com/site/janukaattanayake/
  
  --
  Yannik Behr
  PhD Student in Seismology
  School of Geography, Environment, and Earth Sciences
  Victoria University of Wellington
  P.O. Box 600
  Wellington 6015
  New Zealand
  
  yannik.behr<at>vuw.ac.nz
  
  ph. +64 (4) 463 5233 8369
  fax.+64 (4) 463 5186
Pierre Arroucau

Re: ASCII to SAC

2009-11-05 00:50:20

Dear Manuka,

Again the most convenient way I've found to perform conversions between ascii and binary sacfiles is to use the subroutines contained in the module sac_i_o that comes with the fortran program sac2xy and that you can download from the following webpage :

http://web.utah.edu/thorne/software.html

Regards,
Pierre

----- Original Message -----
From: Januka Attanayake <jattanayake<at>gmail.com>
Date: Wednesday, November 4, 2009 3:53 pm
Subject: [SAC-HELP] ASCII to SAC
To: sac-help<at>iris.washington.edu

Hello everyone,
I have a time series of synthetic traces and would like to convert them to SAC format. I know I could use the CONVERT function but before that I have to format the ASCII (time series) file by arranging the values for sac header. Is there a utility to do this pre-formatting before I could use the CONVERT function?
ex. I believe my ASCII file should look like the following before using CONVERT > 0.125 -7441.313 4087.937 1 -12345
-12.73499 4.265015 -1145.083 -0.7329407 2
-7.154175 -11.04712 -5.158936 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 49.69189 11.22172 499.5 0
-18.58 -177.847 -12345 406800 6.3
153.6304 92.23995 118.4234 -12345 -12345
-12345 -12345 -12345 -12345 -12345
16459.75 348.8256 16.44247 148.1168 -12345
-12345 11.20899 0 0 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
2007 8 21 11 25
723 6 0 0 137
-12345 3 -12345 -12345 -12345
1 7 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
-12345 -12345 -12345 -12345 -12345
1 0 1 1 0
GRA1 -12345
-12345
PKP PKIKP PKiKP
-12345 -12345 -12345
-12345 -12345 -12345
-12345 -12345 -12345
-12345 -12345 BHZ
GR -12345 -12345
-187.3201 -188.5614 -217.869 -206.1952 -207.0166
-215.3447 -195.2354 -180.3634 -132.7042 -73.69939
-41.64182 20.88158 27.19209 49.59732 147.0182
84.607 63.40969 54.25536 80.00433 81.05703
88.90465 90.763 85.95925 49.39476 22.92792
-49.27525 -137.7821 -148.9169 -235.7549 -260.8252
-287.5518 -289.338 -262.7619 -247.1613 -195.9543
-143.929 -87.96223 -55.86754 42.96152 41.11675
88.47706 110.7524 203.3549 248.1527 288.513
289.4476 425.0559 414.4856 489.2326 529.2755
708.3331 979.9971 1099.924 1216.979 1358.369

>

I am not sure how I could get the values related to sac header organized (a program?). Any ideas?

Thank you very much.

Januka.
--
"Nothing can start to exist nor can cease to exist, only transformation is possible"

>

Januka Attanayake
Solid Earth Geophysics & Economics
University of Connecticut
Beach Hall U-2045
354,Mansfield Rd;
Storrs.CT 06269

Tel: 1 860 486 0475
URL: http://sites.google.com/site/janukaattanayake/

>
> _______________________________________________

sac-help mailing list
sac-help<at>iris.washington.edu
http://www.iris.washington.edu/mailman/listinfo/sac-help
Kostantia Makra

Re: ASCII to SAC

2009-11-05 18:45:53

(no body)
SUJIT CHEL

Re: ASCII to SAC

2017-06-12 06:38:04

Did you get your answer ?
my question is how do I convert .BHE / BHN / .BHZ to .SAC format ?
please help.!
Thank u
- Milton Plasencia
  
  Re: ASCII to SAC
  
  2017-06-13 14:37:34
  
  googling “ascii to sac” and find a lot of code for it.
  
  or in sac see the command readtable.
  
  HTH,
  
  m.
  
  On Jun 13, 2017, at 06:15, SUJIT CHEL <sujitphysics<at>gmail.com> wrote:
  
  Did you get your answer ?
  my question is how do I convert .BHE / BHN / .BHZ to .SAC format ?
  please help.!
  Thank u
  
  ----------------------
  SAC Help | http://ds.iris.edu/message-center/topic/sac-help/ | Unsubscribe: sac-help-unsubscribe<at>lists.ds.iris.edu
  
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