Filter löschen
Filter löschen

How to create a long matrix rapidly

1 Ansicht (letzte 30 Tage)
Sergio
Sergio am 17 Jan. 2024
Bearbeitet: Dyuman Joshi am 17 Jan. 2024
I would like to create the given matrix
0 1 1 1 1 1 1 1 1 1
1 0 1 1 1 1 1 1 1 1
1 1 0 1 1 1 1 1 1 1
1 1 1 0 1 1 1 1 1 1
1 1 1 1 0 1 1 1 1 1
1 1 1 1 1 0 1 1 1 1
1 1 1 1 1 1 0 1 1 1
1 1 1 1 1 1 1 0 1 1
1 1 1 1 1 1 1 1 0 1
1 1 1 1 1 1 1 1 1 0
I thought of using the command "zeros" for the diagonal, and then use "ones", but "ones" does not exist.
For instance:
m=[0 ones(1,9);0 ones(0,9)....]
But that won't work.
How can I make such a matrix with such "condensed" commands instead of writing it out completely?
Thanks

Akzeptierte Antwort

Mann Baidi
Mann Baidi am 17 Jan. 2024
Bearbeitet: Mann Baidi am 17 Jan. 2024
Hi,
Assuming you would like to create a diagonal matrix with the diagonal as '0' and rest elements as '1'.
You can try the following code:
x=~diag(ones(10,1))
x = 10×10 logical array
0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0
For more information on "diag" function, you can refer to the link below:
Hope this will help in resolving the query!
  1 Kommentar
Sergio
Sergio am 17 Jan. 2024
Thanks! This is what I looked for indeed.

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (1)

Dyuman Joshi
Dyuman Joshi am 17 Jan. 2024
Bearbeitet: Dyuman Joshi am 17 Jan. 2024
ones does exist, but using eye would be easier and faster here -
n = 10;
x = 1 - eye(n)
x = 10×10
0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0

Kategorien

Mehr zu Operating on Diagonal Matrices finden Sie in Help Center und File Exchange

Tags

Produkte


Version

R2023b

Community Treasure Hunt

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

Start Hunting!

Translated by