清空筛选条件
清空筛选条件

Index exceeds matrix dimensions.

1 次查看（过去 30 天）
Locks
Locks 2013-4-10
hi,
I have used this code here:
for i=1:length(data8(:,1))
if(data8(i,8)>1.1)
data8(i,:) = [];
end
if(data8(i,8)<0.9)
data8(i,:) = [];
end
end
where data 8 is a matrix with 8 columns, and I get this error message:
Index exceeds matrix dimensions.
Error in construct_data (line 43) if(data8(i,8)>1.1)
has anybody an idea why this can happen?

请先登录，再回答此问题。

采纳的回答

Cedric
Cedric 2013-4-10
编辑：Cedric 2013-4-10
length(data8(:,1))
is evaluated only once at the beginning of the FOR loop. It is e.g. 10. Then you remove rows from data8 , whose size therefore decreases (9 rows, 8 rows, ..). At one point the loop index (that is still incremented until it hits 10) becomes larger than the remaining number of rows in data8.
  3 个评论
显示 1更早的评论
Cedric
Cedric 2013-4-10
编辑：Cedric 2013-4-10
Several ways, one is:
i = 0 ;
while i < size(data8, 1)
i = i + 1 ;
% .. whatever you have to do.
end

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by