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/mute.m
function [dataout]=mute(datain,mute_flg,headw1,headw2) % %function [dataout]=mute(datain,mute_flg,headw1,headw2) % %The mute let's you do a top, bottom and horizon mutes %The mute function returns a muted data matrix %Input arguments are: % %headw1= header word containing the mute times in seconds %headw2= header word containing the mute times in seconds %mute_flg= mute flag % 1= mutes everything above headw1 % 2= mutes everything below headw1 % 3= mutes everything above headw1 and everything below headw2 % 4= mutes everything between headw1 and headw2 % %DSI customized VSP processing software %by G. Perron (15 Nov, 1996) %$Id: mute.m,v 3.0 2000/06/13 19:20:53 gilles Exp $ %$Log: mute.m,v $ %Revision 3.0 2000/06/13 19:20:53 gilles %Release 3 % %Revision 2.0 1999/05/21 18:46:03 mah %Release 2 % %Revision 1.1 1999/01/06 19:09:06 kay %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]=mute(datain,mute_flg,headw1,headw2)'); if nargin==3 headw2=headw1; end dataout=datain; m=datain.fh{7}; %number of points per trace a=0; %multiplier for muting data 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 and mut_ind2 are the indexes (-1) corresponding to times in headw1 and headw2 %datain.th{COUNT}(headw1,i) is mute time 1 %datain.fh{9} is start time in seconds %datain.fh{8} is sampling interval in seconds if mute_flg==1 %mute all data before time in headw1 for i=1:n if datain.th{COUNT}(headw1,i)~=0 mut_ind1=round((datain.th{COUNT}(headw1,i)-datain.fh{9})/datain.fh{8}); dataout.dat{COUNT}(1:mut_ind1,i)=datain.dat{COUNT}(1:mut_ind1,i).*a; end end elseif mute_flg==2 %mute data after time in headw1 for i=1:n if datain.th{COUNT}(headw1,i)~=0 mut_ind1=round((datain.th{COUNT}(headw1,i)-datain.fh{9})/datain.fh{8})+2; dataout.dat{COUNT}(mut_ind1:m,i)=datain.dat{COUNT}(mut_ind1:m,i).*a; end end elseif mute_flg==3 %mute data before headw1 and after headw2 for i=1:n if (datain.th{COUNT}(headw1,i)~=0 & datain.th{COUNT}(headw2,i)~=0) mut_ind1=round((datain.th{COUNT}(headw1,i)-datain.fh{9})/datain.fh{8}); mut_ind2=round((datain.th{COUNT}(headw2,i)-datain.fh{9})/datain.fh{8})+2; dataout.dat{COUNT}(1:mut_ind1,i)=datain.dat{COUNT}(1:mut_ind1,i).*a; dataout.dat{COUNT}(mut_ind2:m,i)=datain.dat{COUNT}(mut_ind2:m,i).*a; end end else %mute data between headw1 and headw2 for i=1:n if (datain.th{COUNT}(headw1,i)~=0 & datain.th{COUNT}(headw2,i)~=0) mut_ind1=round((datain.th{COUNT}(headw1,i)-datain.fh{9})/datain.fh{8})+2; mut_ind2=round((datain.th{COUNT}(headw2,i)-datain.fh{9})/datain.fh{8}); dataout.dat{COUNT}(mut_ind1:mut_ind2,i)=datain.dat{COUNT}(mut_ind1:mut_ind2,i).*a; end end end end %loop over records