gusucode.com > DSISoft是由加拿大地质调查局发布的用于垂直地震剖面(VSP)数据处理的免费软件包 > dsisoftv3/dsisoftv3/dsisoftv3/main/mute2.m
function [dataout]=mute2(datain,mute_flg,time1) % %function [dataout]=mute2(datain,mute_flg,time1) % %This function does a top or bottom mute from a constant %time value. %Input arguments are: % %time1= mute time in seconds %mute_flg= mute flag % 1= mutes everything above time1 % 2= mutes everything below time1 % %DSI customized VSP processing software %by E. Adam (February 8 1999) %$Id: mute2.m,v 3.0 2000/06/13 19:20:55 gilles Exp $ %$Log: mute2.m,v $ %Revision 3.0 2000/06/13 19:20:55 gilles %Release 3 % %Revision 2.0 1999/05/21 18:46:05 mah %Release 2 % %Revision 1.1 1999/02/08 21:09:24 eadam %Initial revision % % %Copyright (C) 1998 Seismology and Electromagnetic Section/ %Continental Geosciences Division/Geological Survey of Canada % %This library is free software; you can redistribute it and/or %modify it under the terms of the GNU Library General Public %License as published by the Free Software Foundation; either %version 2 of the License, or (at your option) any later version. % %This library is distributed in the hope that it will be useful, %but WITHOUT ANY WARRANTY; without even the implied warranty of %MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU %Library General Public License for more details. % %You should have received a copy of the GNU Library General Public %License along with this library; if not, write to the %Free Software Foundation, Inc., 59 Temple Place - Suite 330, %Boston, MA 02111-1307, USA. % %DSI Consortium %Continental Geosciences Division %Geological Survey of Canada %615 Booth St. %Ottawa, Ontario %K1A 0E9 % %email: dsi@cg.nrcan.gc.ca disp('[dataout]=mute2(datain,mute_flg,time1)'); dataout=datain; m=datain.fh{7}; %number of points per trace %datain.fh{9} is start time in seconds %datain.fh{8} is sampling interval in seconds mut_ind1=round((time1-datain.fh{9})/datain.fh{8})+2; %calculate the sample where muting starts or ends for COUNT=1:datain.fh{12} %loop over records n=datain.th{COUNT}(12,1); %number of traces in a record %if statements to mute specified data %mut_ind1 is the index corresponding to time1 if mute_flg==1 %mute all data before time1 for i=1:n dataout.dat{COUNT}(1:mut_ind1,i)=0.0; end elseif mute_flg==2 %mute data after time1 for i=1:n dataout.dat{COUNT}(mut_ind1:m,i)=0.0; end end end %loop over records