0 个投票

R=[1,-0.5,-0.5];
for i=2:25
a = -0.50;
b = 0.50;
R = [R;i,(b-a).*rand(1,1) + a,(b-a).*rand(1,1) + a];
end
R=[R;26,0.5,0.5];
disp(R);
[D,I] = pdist2(R(:,(2:3)),R(:,(2:3)),'euclidean','Smallest',3);
D(1,:)=[];
I(1,:)=[];
disp(D);
disp(I);
Edge=zeros(52,3);
for i=1:26
%intersect is a function written correctly!
if intersect(R(i,2:3),R(I(1,i),2:3))==1
continue
else
Edge(i,1)=i;
Edge(i,2)=I(1,i);
Edge(i,3)=D(1,i);
end
end
for j=1:26
if intersect(R(j,2:3),R(I(2,j),2:3))==1
continue
else
Edge(j+26,1)=j;
Edge(j+26,2)=I(2,j);
Edge(j+26,3)=D(2,j);
end
end
disp(Edge);
Q=zeros(1,3);
for k=1:51
if Edge(k,:)==Q
Edge(k,:)=[];
end
end
disp(Edge);
The error I am receiving is:
Index in position 1 exceeds array bounds (must not exceed 42).
Error in ehe (line 39)
if Edge(k,:)==Q

3 个评论
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Star Strider
Star Strider 2019-6-29
Your posted code runs for me without error (R2019a).
hrushikesh kyathari
编辑：hrushikesh kyathari 2019-6-29
Whenever I run the code, I am getting a change in error. Sometimes it is
Index in position....exceed 42,36,40.
I feel something is wrong with the last for loop used to delete empty rows,cause when I remove the loop, the code runs perfectly . Any suggestions for that.
the cyclist
the cyclist 2019-6-29
I have run your code repeatedly, and get no error.
Do you have the problem on a fresh restart of MATLAB?

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 采纳的回答

Walter Roberson
Walter Roberson 2019-6-29

1 个投票

mask = any(Edge,2);
Edge = Edge(mask,:);
or
mask = ~any(Edge,2);
Edge(mask,:) = [];
or
for k=51:-1:1
if Edge(k,:)==Q
Edge(k,:)=[];
end
end

2 个评论
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hrushikesh kyathari
编辑：hrushikesh kyathari 2019-6-29
Thank you, Mr Roberson, your answer has solved my problem. Could you please explain what is the difference between the two for loops, so that in future I can solve the bug myself.

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