A forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc.
This mailing list has moved to https://groups.google.com/a/earthscope.org/g/sac-community.
Active Message Threads for August 2011
2011-08-28 22:19:03 - 2011-08-29 00:55:38
Hello: I have a set of Canadian seismograms that I need to remove the instrument response from. I have converted the seed files to sac files and extracted the RESP files. I am using the following commands in SAC: sac> file.sac sac> rmean sac> rtrend sac> taper sac> trans from evalresp to none freq .01 .015 2 5 When I use the evalresp file I get the following output: Nominal Calper not set. Setting Nominal Calper to -999.000000 to match Wfdisc Calper Sensor Calper not set. Setting Sensor … [more]
dear All, we recently moved to ubuntu 64bit our computer used for running some complex sac macros that generate figures by first creating .sgf file and then converting it to ps by using sgftops. sac version is 101.4 linux64. We now observe unrequested straight lines (see attachment) that from some points in one of the boxes reach the lower left corner. The problem is not observed when plots are sent to screen by using bg X instead of bg sgf. sgf files are normally 2-3Mbyte large. Any… [more]
Re: fake lines in conversion with sgftops - Arthur Snoke - 2011-08-24 14:27:50
2011-08-17 05:53:17 - 2011-08-18 18:02:23
Hello, Is there any way to detect a non-number value (like inf and nan) in an if loop? I couldn't find any references to this in the manual. All versions below are simply ignored by sac: mtw %min %max rms to user0 setbb sta &1,user0 *** doesn't work: if %sta eq inf message "***** not a number ******" endif *** doesn't work: if %sta eq "inf" message "***** not a number ******" endif Note, this works: if %sta eq 0 message "***** detected zero ******" endif Thanks, Igor
Re: detecting "inf" and "nan" in sac - Igor - 2011-08-18 18:02:23
Please unsubscribe firstname.lastname@example.org from the SAC help mailing list. Thank you. Raymond Chen
Suzan van der Lee
2011-08-16 19:16:48 - 2011-08-16 20:49:35
A participant in our USArray Data Processing short course this week discovered that SAC will happily "interpolate" to a larger DELTA value (fewer samples), and apparently does so without anti-alias filtering. Would you consider building in an error message if the DELTA given to "interpolate" exceeds the DELTA in the SAC files in memory? Suzan
Re: interpolate - Arthur Snoke - 2011-08-16 20:49:35
Dear SAC-users: I am using SAC for seismological analysis recently. However, I got some problem about HYPO format using OHPF with sac101.4. I piked/marked the phase after opening the OHPF and OAPF, but the result is different as follows: case1: GJM IPU0 11 3 9 24663.00 0 0.0 (OHPF) case2: -12345 GJM 90.00 90.00IPU0 2011 68 2 46 2.06 -4171 M (OAPF) In case1 the second of the P arrival is 63.00, while in case2 that is 2.06. What does the last four d… [more]
2011-08-06 16:30:25 - 2011-08-06 22:13:01
Hi All, I was able to compile the same source code of SAC 101.3b on my linux workstation (CentOS 5.5) and macbook (snow leopard). But I encountered the same error message when compiling SAC in Mac OS Lion and Ubuntu 11.04 and 10.04. gcc -DHAVE_CONFIG_H -I. -I../inc -I../inc -I../libedit/include -c -o bbs/setbbv.o bbs/setbbv.c In file included from bbs/setbbv.c:12: ../inc/co.h:42: error: conflicting types for ‘getline’ /usr/include/stdio.h:449: error: previous declaration of ‘getline’ was her… [more]
Re: install sac-101.3b on Mac OS Lion and Ubuntu 11.04 and 10.04 - Brian Savage - 2011-08-06 22:13:01
Hello, I am new to linux forgive my bad writing in English I need to install S.A.C. in my notebook 64 bit What files to download? What type console-linux? etc thanks Misael grateful.