how can i create only the Matrix index

2 次查看（过去 30 天）

mohammed hussein 2017-11-7

评论： mohammed hussein 2017-11-7

Hi i would like to create two variable that represent the matrix index of any size of matrix for example if i have matrix

A=[(1,1) (1,2) (1,3);(2,1) (2,2) (2,3);(3,1) (3,2) (3,3)]

how can i create like the matrix A

thank you

Walter Roberson 2017-11-7

The easiest way is

sparse(list_of_row_indices, list_of_corresponding_column_indices, list_of_corresponding_values)

You can full() the result afterwards.

Walter Roberson 2017-11-7

[R,C] = ndgrid(1:size(YourMatrix,1), 1:size(YourMatrix,2));
A = idxMatrix = arrayfun(@(r,c) [r,c], R, C, 'uniform', 0);

thank you very much , it works perfectly

MATLAB Language Fundamentals Matrices and Arrays Matrix Indexing

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

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

Translated by