calculate the distance between two successive dots

Hello friends..

• my table contains 79 points

*here is my code

 =======================

• T = zeros;

*x=0;z=0;

• a=length(points);%79points

*for i = 1:a

*for j = i+1:a

• x = x + 1;
• d1 = norm(points(j)-points(i));
• T(x,:) = d1;

        end
      end
   end
xlswrite('d:\result.xlsx',T);
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*I want to calculate the distance between two successive dots ie: (point1,point2),(point3,point4),point5,point6)

*I normally get 39 distance but I got 3081 distance(because the loop it calculated the distance between all points)

Answer 1

[Joseph Cheng]

you'll have to do something like this

T = zeros;  
x=0;z=0;
a=length(points);%79points

for i = 1:2:a 
     x = x + 1;
     d1 = norm(points(i+1)-points(i));
     T(x,:) = d1;
end
xlswrite('d:\result.xlsx',T);

Since you want just points 1 and 2 , then 3 and 4, etc. we can use the i=1:2:a to increment i by 2, and compare i to i+1. This way i will be 1, 3, 5 and the compared point will be 1+1, 3+1 , 5+1 (or 2,4,6).

[bil bbil]

thank you very much...