How do you convert an array into a square matrix?

11 Ansichten (letzte 30 Tage)
Mike
Mike am 29 Sep. 2012
Say I have an array
x=[1 2 3 4 5 6 7 8 9 10]
and I want to convert this into a square matrix as follows:
M=
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10...
And so on so that there are a total of 10 rows and 10 columns
So I start with a [1x10]array and turn this into a [10x10] matrix
How do you do this??
Thank you!
MC
  1 Kommentar
Matt J
Matt J am 29 Sep. 2012
It's often possible to avoid replicating data (and also desirable for memory-efficiency reasons) using the BSXFUN command. You should elaborate on why you think you need the rows replicated.

Melden Sie sich an, um zu kommentieren.

Akzeptierte Antwort

Wayne King
Wayne King am 29 Sep. 2012
Bearbeitet: Wayne King am 29 Sep. 2012
x = [1 2 3 4 5 6 7 8 9 10];
x = repmat(x,10,1);

Weitere Antworten (2)

Matt Fig
Matt Fig am 29 Sep. 2012
Bearbeitet: Matt Fig am 29 Sep. 2012
Another:
x = 1:10; % Original
x = x(ones(1,length(x)),:) % indexing instead of repmatting.

Andrei Bobrov
Andrei Bobrov am 30 Sep. 2012
M = ones(numel(x),1)*x;
M = bsxfun(@plus,x,zeros(numel(x),1));

Kategorien

Mehr zu Resizing and Reshaping Matrices finden Sie in Help Center und File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by