SAC Help

A forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc.

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Active Message Threads for February 2015

George Sand França
2015-02-28 22:39:31 - 2015-02-28 23:15:01
Hello everyone   SAC has problem with evaluate command I tried to use a simple command as examples by sac manual web SAC> EVALUATE 4 * atan 1 / PI Syntax error: EVALUATE 4 * atan 1 / PI I am using the Version 101.6) ^ Prof. George Sand França Observatório Sismológico Universidade de Brasília www.obsis.unb.br[1] www.tremordeterra.blogspot.com[2] 61 31071298 Links: ------ [1] http://www.obsis.unb.br [2] http://www.tremordeterra.blogspot.com
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Hamdi ALKAN
2015-02-17 23:01:20
My name is Hamdi ALKAN from Yüzüncü Yıl University, Van, Turkey. I want to compile sac 101.6a. My pc has ubuntu 14.04 (Linux halkan65-VirtualBox 3.13.0-45-generic #74-Ubuntu SMP Tue Jan 13 19:37:48 UTC 2015 i686 i686 i686 GNU/Linux) First, start ./configure I take below Compilation Options. But I have matlabr2009a. Afterthat, i run the options ./make for creating SAC executable. So, I have taken some errors as error: ‘ED_UNASSIGNED’. What is mean this error and how can I solve this problem?... [more]
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Satish_iitb
2015-02-11 07:19:22 - 2015-02-11 17:29:28
Hi Everyone, *Aim is : Cut the trace in given window and apply taper . recover original trace* *again but difference is now trace is zero outside the cutting window without loss any header.* 1) Cut a trace as given window and save without loss of any header information. (problem is loss headers) 2) Then add a zeros trace have exact length of original trace in above cut trace. Any help or shortcut is very helpful. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *... [more]
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ying
2015-01-27 20:37:43 - 2015-02-11 05:10:12
hi colleagues: Is there a way to reduce the window size after 'bd x'? Everytime, I have to resize the window size. Thank you. Ying cai zheng
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Dear All - In the nonce, this will also work. It is a macro to do a pick with attached quality and transfer it to another of the Tn variables. Always uses the P pick but saves/restores info around it. SAC> sc cat /tmp/pick.m * Macro to make a quality-coded and directional pick and to transfer it to * t0-t9 * * usage: m pick t[0-9] setbb sva "&1,a&" svka "&1,ka&" message "Make pick using P; result will be transferred to $1$" ppk ch $1$ "&1,a&" k$1$ "&1,ka&" ch A "%sva%" KA "%svka%" unset... [more]
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Martha Savage
2015-02-09 11:38:21 - 2015-02-09 22:07:33
Hi, I felt sure that SAC used to let the user using ppk specify a quality to a pick on the T1-T9 variables by first typing the quality etc. and then the pick number, e.g., typing u2it3 would make the variable t3 have the time of the phase where the cursor was, and the variable Kt3 would have "U2I" in it. However, now we've been using SAC 101.6 and it doesn't seem to work that way any more. Now the time is still properly entered into t3, but the label is put into the Amarker no matter what... [more]
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Geo .
2015-02-05 23:06:49 - 2015-02-06 00:25:05
Hi, Does anyone know if you have to use separate PZs files when you are deconvolving the instrument from BH? data versus HH? data? if the gain remains the same, can we use the same PZs file by manually changing the channel code? Is the assumption that the normalization factor remains the same going from BH? to HH? accurate? Many thanks ! Januka. Januka Attanayake Postdoctoral Research Associate Laboratório de Sismologia Complexo Interdisciplinar Departamento de Física Instituto Superior T... [more]
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