www.pudn.com > geometric.rar > distpoint.m, change:2004-08-13,size:2585b

function s=distpoint(x,y,xnot,ynot) % s=distpoint(x,y,xnot,ynot) % % This function computes the distance between each pair of points represented % by the vectors x and y and the single point xnot,ynot. That is S(j) is the % distance from x(j),y(j) to xnot,ynot. % See also distcum distinc and distreach % % x = vector containing the x coordinates of the data points % % y = vector containing the y coordinates of the data points % % xnot = scalar x coordinate of the single point % % ynot = scalar y coordinate of the single point % % s = distance vector containing the distance between each point in % x and y and the point xnot,ynot % % by G.F. Margrave, March 1993 % % 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 [nx,mx]=size(x); [ny,my]=size(y); if (nx~=ny) | (mx~=my) error(' Vectors must be same length'); end s=zeros(nx); s(1:nx,1:mx) = (x(1:nx,1:mx)-xnot).^2 + (y(1:nx,1:mx)-ynot).^2; s=s.^.5;