www.pudn.com > geometric.rar > closetrace.m, change:2004-08-13,size:2424b

function ind = closetrace(xxx,yyy,xw,yw,rd)   % function ind = closetrace(xxx,yyy,xw,yw,rd)  % % function linewelltie(action)  %  finds closest trace (point) in line to given well location (xw,yw) %  (as long as the trace is within a radius rd) %  line defined by points xxx(i),yyy(i) %  returns index of closest trace  %  returns null if no trace is close enough % %  T.N.Bishop,  December 1993, CPTC Canada %   see also seis2well, linewelltie % % NOTE: It is illegal for you to use this software for a purpose other % than non-profit education or research UNLESS you are employed by a CREWES % Project sponsor. By using this software, you are agreeing to the terms % detailed in this software's Matlab source file.   % BEGIN TERMS OF USE LICENSE % % This SOFTWARE is maintained by the CREWES Project at the Department % of Geology and Geophysics of the University of Calgary, Calgary, % Alberta, Canada.  The copyright and ownership is jointly held by  % its author (identified above) and the CREWES Project.  The CREWES  % project may be contacted via email at:  crewesinfo@crewes.org %  % The term 'SOFTWARE' refers to the Matlab source code, translations to % any other computer language, or object code % % Terms of use of this SOFTWARE % % 1) Use of this SOFTWARE by any for-profit commercial organization is %    expressly forbidden unless said organization is a CREWES Project %    Sponsor. % % 2) A CREWES Project sponsor may use this SOFTWARE under the terms of the  %    CREWES Project Sponsorship agreement. % % 3) A student or employee of a non-profit educational institution may  %    use this SOFTWARE subject to the following terms and conditions: %    - this SOFTWARE is for teaching or research purposes only. %    - this SOFTWARE may be distributed to other students or researchers  %      provided that these license terms are included. %    - reselling the SOFTWARE, or including it or any portion of it, in any %      software that will be resold is expressly forbidden. %    - transfering the SOFTWARE in any form to a commercial firm or any  %      other for-profit organization is expressly forbidden. % % END TERMS OF USE LICENSE   %  FIND WELL TO SEISMIC MATCHES THAT ARE WITHIN RADIUS      ind = [];      dclose = closeline(xxx,yyy,xw,yw);      if dclose <= rd       d=sqrt( (xxx-xw).^2 + (yyy-yw).^2 );       dmin = min(d);       if dmin <= rd         ind = find(d == dmin);       end     end