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can anybody help me with this error???

1 次查看（过去 30 天）
Sony
Sony 2013-5-23
关闭： MATLAB Answer Bot 2021-8-20
x1=sortrows(xf,2);
p=round(x1);
classes=20;
array=zeros(size(classes),3)
min1=min(p(:,2));
max1=max(p(:,2));
classwidth=(max1-min1)/classes;
d=ceil(classwidth);
sum=0; j=1;k=1;n=0;
lowerlimit=min1:d:max1;
cw=d-1;
upperlimit=cw+lowerlimit;
ll=lowerlimit';
ul=upperlimit';
for k=1:classes
for i=1:size(p)
if p(i,2)>=ll(k) && p(i,2)<=ul(k)
sum=sum+p(i,1);
end
end
array(k,1)=sum;
array(k,2)=ll(k);
array(k,3)=ul(k);
sum=0;
end
The error is in this line
Index exceeds matrix dimensions.
Error in ==> if p(i,2)>=ll(k) && p(i,2)<=ul(k)
  3 个评论
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Jan
Jan 2013-5-23
Please use meaningful tags. Of course all questions in a Matlab forum concern "matlab".
Sony
Sony 2013-5-23
size of x1 and xf is 63 rows and 2 columns

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回答（1 个）

Jan
Jan 2013-5-23
编辑：Jan 2013-5-23
You can use the debugger to check, what's going on:
dbstop if error
Then start the program again. When Matlab stops at the error inspect the values of i and k as well as the sizes of p, ll and ul.
It is not possible in theory that we can fix the problem, because all we have is the failing code, but we cannot guess its intention reliably.

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