Creating a new matrix and insert certain values into that matrix

30 vues (au cours des 30 derniers jours)
eko supriyadi
eko supriyadi le 30 Août 2021
Commenté : eko supriyadi le 2 Sep 2021
Dear Matlab community
suppose i want make new matrix 4*4 and insert a value based on the row-column position of the matrix, and also if there is no value it is filled with nan.. any ideas to solve it?
the value where i want to insert are:
A(1,1) = 2
A(3,1) = 2
A(3,1) = 2
A(2,3) = 4
A(2,4) = 2
A(3,1) = 3
A(3,2) = 3
A(4,1) = 2
A(3,4) = 1
and give the result:
A =
2 NaN 3 2
NaN NaN 3 NaN
2 4 NaN 1
4 2 NaN NaN
  1 commentaire
Stephen23
Stephen23 le 30 Août 2021
Modifié(e) : Stephen23 le 30 Août 2021
Note that the indexing and values you show will NOT generate that "result" matrix.
As far as I can tell, half of the values in your results matrix are randomly placed.

Connectez-vous pour commenter.

Réponse acceptée

Stephen23
Stephen23 le 30 Août 2021
I suspect that you are asking about SUB2IND:
R = [1,3,3,2,2,3,3,4,3];
C = [1,1,1,3,4,1,2,1,4];
V = [2,2,2,4,2,3,3,2,1];
M = nan(4,4);
M(sub2ind(size(M),R,C)) = V
M = 4×4
2 NaN NaN NaN NaN NaN 4 2 3 3 NaN 1 2 NaN NaN NaN

Plus de réponses (0)

Catégories

En savoir plus sur Matrices and Arrays dans Help Center et File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by