www.pudn.com > matlab±à³Ì.zip > dist2.m, change:1999-03-10,size:708b

function distance = dist2(x1, y1, x2, y2) 
%DIST2 Calculate the distance between two points 
% Function DIST2 calculates the distance between  
% two points (x1,y1) and (x2,y2) in a Cartesian 
% coordinate system. 
  
% Define variables: 
%   x1       -- x-position of point 1 
%   y1       -- y-position of point 1 
%   x2       -- x-position of point 2 
%   y2       -- y-position of point 2 
%   distance -- Distance between points 
 
%  Record of revisions: 
%      Date       Programmer          Description of change 
%      ====       ==========          ===================== 
%    12/15/98    S. J. Chapman        Original code 
 
% Calculate distance. 
distance = sqrt((x2-x1).^2 + (y2-y1).^2);