www.pudn.com > geometric.rar > closeline.m, change:2004-08-13,size:2651b

function dclose = closeline(xxx,yyy,xw,yw)   % function dclose = closeline(xxx,yyy,xw,yw)  % % function dclose = closeline(xxx,yyy,xw,yw)  % function linewelltie(action)  %  finds closest possible point in line area %    (line defined by xxx(i),yyy(i)) %     to given well location (xw,yw).  %    Line area is defined by %     circumscribed rectangle which surrounds line. %  returns dclose, the distance of closest  %     possible point in the line area to the well. % %  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      xxxmin = min(xxx);     yyymin = min(yyy);     xxxmax = max(xxx);     yyymax = max(yyy);     if xw >= xxxmax       xclose=xxxmax;     elseif xw <= xxxmin       xclose=xxxmin;     else       xclose=xw;     end     if yw >= yyymax       yclose=yyymax;     elseif yw <= yyymin       yclose=yyymin;     else       yclose=yw;     end      dclose=sqrt( (xclose-xw).^2 + (yclose-yw).^2 );