How to assign values to a matrix from index array?

28 次查看（过去 30 天）

Juan Moreno 2020-11-14

评论： Juan Moreno 2020-11-14

I have an initial zeros matrix A, to fill with ones at matrix coordinates given by elements in x and y. but when i do A(x,y)=1, it does not work.

I have this:

when I do A(x,y)=1, I got this:

but I expect this:

How should I do this assignment?

Thanks.

James Tursa 2020-11-14

A(sub2ind(size(A),x,y)) = 1;

Juan Moreno 2020-11-14

it works! Thanks.

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