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/unflat.m
function [dataout]=unflat(datain,flt_time,headw1) % %function [dataout]=unflat(datain,flt_time,headw1) % %The funcion unflat an the times in a header number to a desired time % %The flat function a seismic matrix with the flattened data %Input arguments are: %datain= input data in official DSI format %flt_time= time at which to flat data in seconds %headw1= header word containing the picked times of the horizon % %DSI customized VSP processing software %written by G. Perron %$Id: unflat.m,v 3.0 2000/06/13 19:22:35 gilles Exp $ %$Log: unflat.m,v $ %Revision 3.0 2000/06/13 19:22:35 gilles %Release 3 % %Revision 2.0 1999/05/21 18:47:01 mah %Release 2 % %Revision 1.1 1999/01/06 19:09:10 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]=flat(datain,flt_time,headw1)'); n=datain.fh{7}; %number of points per trace dataout=datain; %time_num=find(datain.time==flt_time); time_num=round(flt_time./datain.fh{8}); for COUNT=1:datain.fh{12} %loop over records m=datain.th{COUNT}(12,1); %number of traces in a record dataout.dat{COUNT}=zeros(n,m); trc_num=round(datain.th{COUNT}(headw1,:)/datain.fh{8})+1; diff_num=trc_num-time_num; for i=1:m if diff_num(i) > 0 dataout.dat{COUNT}(diff_num(i):n,i)=datain.dat{COUNT}(1:n-diff_num(i)+1,i); elseif diff_num(i) < 0 %needs to be fixed dataout.dat{COUNT}(diff_num(i)*(-1):n,i)=datain.dat{COUNT}(1:n-(diff_num(i)*(-1)-1),i); elseif diff_num(i) == 0 dataout.dat{COUNT}(:,i)=datain.dat{COUNT}(:,i); end end end %loop over records