[SAC-HELP] 3 questions
Michael Thorne
mthorne at gi.alaska.edu
Wed Nov 29 16:57:44 PST 2006
Hi Januka, you can use my 'sac2xy' program to quickly turn the
time,amplitude from a SAC file into a ascii file. the program doesn't
need to open up sac. at the command prompt you just need to type:
>> sac2xy name_of_sacfile name_of_outputfile
you can grab the program from:
http://www.aeic.alaska.edu/input/mthorne/software/index.html
On Wed, 29 Nov 2006, Januka Attanayake wrote:
> Greetings,
>
> I have 3 questions today !
>
> 1) I have the following piece of script that I use to mark t0 on the
> seismogram
>
> r 1 2 3
> ppk --->(I mark t0 using the cursor)
> setbb t0 &1, t0 &2, t0 &3
> r 1 2 3
> ch t0 %t0
> w over
>
> say I have 500 seismograms, how do I replace " setbb t0 &1, t0 &2, t0 &3 "
> so that I can mark t0 all together?
>
> 2) If I have again a bunch of seismograms that I need to seperate according
> to distance how do I do that? is there a script that I can use to do this?
>
> 3) How can I make an ASCII file (2-column, time and amplitude) from a sac
> file that I down load from IRIS?
>
> Thank you ..!
>
> Januka.
>
> On 11/23/06, sac-help-request at iris.washington.edu <
> sac-help-request at iris.washington.edu> wrote:
>>
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>>
>> Today's Topics:
>>
>> 1. naming files (Januka Attanayake)
>> 2. Re: naming files (andreas wessel)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Thu, 23 Nov 2006 00:31:15 -0500
>> From: "Januka Attanayake" <jattanayake at gmail.com>
>> Subject: [SAC-HELP] naming files
>> To: sac-help at iris.washington.edu
>> Message-ID:
>> <984f6f900611222131s12305e84mbc738dddf0ed8c7d at mail.gmail.com>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Greetings,
>> I have a question regarding naming files. Assume that I have a sac file by
>> the name
>> 2006.300.33.SDMD.BHZ.R.SAC
>> say, If I want to extract only the 2006.300.33.SDMD part for naming
>> purposes
>> after I do certain calculations on it, how do I do it?
>> would something like this work?
>>
>> set bb name $1$.$STATION$ ?
>> w %name.z
>>
>> It didn't so far for me?
>> Would like to hear any suggestions from any one out there....
>>
>> Thank you.
>>
>> Januka
>>
>> On 11/14/06, sac-help-request at iris.washington.edu <
>> sac-help-request at iris.washington.edu> wrote:
>> >
>> > Send sac-help mailing list submissions to
>> > sac-help at iris.washington.edu
>> >
>> > To subscribe or unsubscribe via the World Wide Web, visit
>> > http://www.iris.washington.edu/mailman/listinfo/sac-help
>> > or, via email, send a message with subject or body 'help' to
>> > sac-help-request at iris.washington.edu
>> >
>> > You can reach the person managing the list at
>> > sac-help-owner at iris.washington.edu
>> >
>> > When replying, please edit your Subject line so it is more specific
>> > than "Re: Contents of sac-help digest..."
>> >
>> >
>> > Today's Topics:
>> >
>> > 1. Re: Cut command (andreas wessel)
>> >
>> >
>> > ----------------------------------------------------------------------
>> >
>> > Message: 1
>> > Date: Tue, 14 Nov 2006 13:44:57 +1300
>> > From: "andreas wessel" <awbochum at gmail.com>
>> > Subject: Re: [SAC-HELP] Cut command
>> > To: "Talal Merghelani" <talalmg1 at yahoo.com>
>> > Cc: SAC HELP <sac-help at iris.washington.edu>
>> > Message-ID:
>> > <2afddd310611131644k148e9719x21a328c850048ca8 at mail.gmail.com>
>> > Content-Type: text/plain; charset="iso-8859-1"
>> >
>> > Hi Talal,
>> >
>> > you could create a shellscript that runs your cutting macro for every
>> > sac-file in the current directory:
>> > I used that to byteswap a lot of files at once:
>> >
>> > for j in $*
>> > do
>> > fn=$j
>> > echo sac_starts_here %%%%%%%%%%%%%%%%
>> > /usr/local/bin/sac /macro/macro.m $fn
>> > done
>> > exit 0
>> >
>> > You have to adjust the pathes to point to your sac binary and to the
>> macro
>> > you want to use.
>> > The macro looks like this:
>> >
>> > r $1
>> > "some other commands"
>> > q
>> >
>> >
>> > If you execute the shellscript with
>> > "script.sh *.SAC"
>> > the for loop will cycle through all the .SAC files, read every single
>> one
>> > in
>> > sac and then execute the commands in the macro.
>> > You still would have to figure out a way to calculate the parameters for
>> > every file, but this depends on what you want.
>> >
>> > ciao,
>> > Andreas
>> >
>> >
>> >
>> >
>> > On 11/14/06, Talal Merghelani <talalmg1 at yahoo.com> wrote:
>> > >
>> > > Hi all
>> > >
>> > > i wanna use cut command for many files( 40~60 files) to cut
>> > S-wave(usually
>> > > 3-5sec time window), for each file they have their own values for cut
>> > > parameters(depend on S-wave).
>> > >
>> > > i have reviewed the sac manual for cut command. but, there is no such
>> > way
>> > > to select the command cut values indepently for each file..?
>> > >
>> > > its time consuming doing this manaully...!!
>> > >
>> > > there is any systematic way for doing this by writing a macros command
>> > > file..?
>> > >
>> > > of course i care about the result quality. mean, should be the time
>> that
>> > i
>> > > wanna to cut it exaclty..!!
>> > >
>> > > any idea any help..!! please, attached with an example..
>> > >
>> > > thank you in advance
>> > > Talal
>> > >
>> > > P.S. the input is in *.SAC file and the output is *.TXT file.
>> > >
>> > > ------------------------------
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>> > _______________________________________________
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>> > End of sac-help Digest, Vol 17, Issue 9
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>> >
>>
>>
>>
>> --
>> "Nothing can start to exist nor can cease to exist, only transformation is
>> possible"
>>
>> Januka Attanayake
>> Center for Integrative Geosciences - Solid Earth Geophysics
>> University of Connecticut
>> Beach Hall U-2045
>> 354,Mansfield Rd;
>> Storrs.CT 06269
>>
>> Tel: 1 860 486 0475
>> http://www.geocities.com/jattanayake
>> http://earth.uconn.edu/
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>> ------------------------------
>>
>> Message: 2
>> Date: Thu, 23 Nov 2006 18:47:04 +1300
>> From: "andreas wessel" <awbochum at gmail.com>
>> Subject: Re: [SAC-HELP] naming files
>> To: sac-help at iris.washington.edu
>> Message-ID:
>> <2afddd310611222147m95030aak7d68f61efa8c5891 at mail.gmail.com>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Hi there,
>>
>> I think you have just a typing error.
>>
>> - setbb goes together, without a space..
>> - to take a variable and append something, you have to put the delimiter
>> at
>> the end of the name of the var, just as you did with the $
>>
>> setbb name 1234
>> sc echo %name%567
>>
>> You didn't post what error msg you get, but I think it is "Could not find
>> VARS variable blackboard", because Sac is looking for a variable "name.z"
>> instead of "name"
>>
>> good luck
>> andreas
>>
>> On 11/23/06, Januka Attanayake <jattanayake at gmail.com> wrote:
>> >
>> > 2006.300.33.SDMD.BHZ.R.SAC
>> >
>> I want to extract only the 2006.300.33.SDMD part for naming purposes after
>> I
>> > do certain calculations on it
>>
>> set bb name $1$.$STATION$ ?
>> > w %name.z
>> >
>> >
>> -------------- next part --------------
>> An HTML attachment was scrubbed...
>> URL:
>> http://www.iris.washington.edu/pipermail/sac-help/attachments/20061122/cdc42f96/attachment-0001.html
>>
>> ------------------------------
>>
>> _______________________________________________
>> sac-help mailing list
>> sac-help at iris.washington.edu
>> http://www.iris.washington.edu/mailman/listinfo/sac-help
>>
>>
>> End of sac-help Digest, Vol 17, Issue 12
>> ****************************************
>>
>
>
>
> --
> "Nothing can start to exist nor can cease to exist, only transformation is
> possible"
>
> Januka Attanayake
> Center for Integrative Geosciences - Earthquake Seismology
> University of Connecticut
> Beach Hall U-2045
> 354,Mansfield Rd;
> Storrs.CT 06269
>
> Tel: 1 860 486 0475
> http://www.geocities.com/jattanayake
> http://earth.uconn.edu/
>
:-----:-----:-----:-----:-----:-----:-----:-----:-----:-----:-----:
Michael Thorne
Post Doctoral Research Fellow
Geophysical Institute
University of Alaska Fairbanks
903 Koyukuk Drive
P.O. Box 757320
Fairbanks, AK 99775-7320
phone: (907) 474-1882
email: mthorne at gi.alaska.edu
web: http://giseis.alaska.edu/input/mthorne
:-----:-----:-----:-----:-----:-----:-----:-----:-----:-----:-----:
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