Finding elements of an arrays having specified index numbers

3 次查看（过去 30 天）
Saeid
Saeid 2019-6-22
回答： dpb 2019-6-22
If I select a number of elements from an M X N array (which usually follow a pattern) I need to assign the indices of these elements into an nX2 array where the columns 1 and 2 are the row and column numbers of these elements. then I would like to find elements of another M X N array having these index numbers. As an example, I have already marked the red elements in the 17X14 array shown below and now I want to find the elements of another 17 X 14 array having exactly these numbers. How can I do this?
ArrayIndices.png

请先登录，再回答此问题。

采纳的回答

dpb
dpb 2019-6-22
Given you return the indices in vectors ix and iy, then
V=A(sub2ind(size(A),ix,iy));
where A is the other array and V will be the vector of returned values from those locations. Note, V is a vector, not an array.

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

产品

Community Treasure Hunt

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

Start Hunting!

Translated by