In an assignment A(I) = B, the number of elements in B and I must be the same error

1 次查看（过去 30 天）
ajk1
ajk1 2015-4-21
评论： ajk1 2015-4-21
Hi, I would like to know how to change the 0's in C that are in the same position where d1 finds values where (d<=d0) with the corresponding d value. d is a 100x1 array and d0 is the mean value. For instance if the first and fourth elements in d are less than d0, then the first and fourth elements in d are stored as the first and fourth elements in C respectively.
C=zeros(100,1);
d1=find(d<=d0);
C(d1)=d;

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2015-4-21
Almost right. Try this instead:
C=zeros(100,1);
d1 = find(d<=d0);
C(d1)=d(d1);

更多回答（1 个）

Star Strider
Star Strider 2015-4-21
编辑：Star Strider 2015-4-21
Using ‘logical indexing’ works well here:
C = zeros(100,1);
d = randi(10, 100, 1);
d0 = mean(d);
C(d<=d0) = d(d<=d0);

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