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/main/handrot.m
function [dataout]=handrot(datain,headw1,comp1,comp2) %handrot - function to rotate horizontal components for borehole data (DSI etc.) into %radial and transverse components according to an angle contained in a trace header word % %function [dataout]=handrot(datain,headw1,comp1,comp2) % %INPUT VARIABLES %'datain' must be in official DSI data format %each record must represent a component x, y, or z in that order %this can be achieved using 'sortrec' % % headw1 = header word containing the rotation angle in degrees % comp1 = component to be maximized % comp2 = component to be minimized % % Please note: Software does not check for reasonable parameters or dead traces % %DSIsoft ver 2.0 %DSI customized VSP processing software % %Written by Marko Mah March 1999 %$Id: handrot.m,v 3.0 2000/06/13 19:20:20 gilles Exp $ %$Log: handrot.m,v $ %Revision 3.0 2000/06/13 19:20:20 gilles %Release 3 % %Revision 2.0 1999/05/21 18:45:38 mah %Release 2 % %Revision 1.2 1999/05/19 21:02:10 mah %version number % %Revision 1.1 1999/03/17 19:20:40 mah %Initial revision % % % % %Copyright (C) 1998 Seismology and Electromagnet+ic 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]=handrot(datain,headw1,comp1,comp2)'); w=pi/180; trclength=datain.fh{7}; %number of points per trace smpint=datain.fh{8}; %smpint is the sampling interval dataout=datain; %check to make sure data is separated into components %ntr is the number of traces in each record for COUNT=3:-1:1 %get number of traces in each component ntr(COUNT)=datain.th{COUNT}(12,1); end %for if (ntr(1)~=ntr(2)) | (ntr(1)~=ntr(3)) error('check data format - different number of traces in components'); end%if if length(datain.dat)~=3 error('data must have only 3 records - one for each of x, y and z'); end %if %************************************************************************* for COUNT1=1:ntr sinangmx=sin((datain.th{1}(headw1,COUNT1))*w); cosangmx=cos((datain.th{1}(headw1,COUNT1))*w); for COUNT2=1:trclength data1=datain.dat{comp1}(COUNT2,COUNT1); data2=datain.dat{comp2}(COUNT2,COUNT1); dataout.dat{comp1}(COUNT2,COUNT1)=data1*cosangmx + data2*sinangmx; %radial dataout.dat{comp2}(COUNT2,COUNT1)=-data1*sinangmx + data2*cosangmx; %transverse end %loop over samples end %for COUNT1 %make changes to trace header dataout.th{comp1}(4,:)=4; dataout.th{comp2}(4,:)=5;