How to stick on/augmenting a vector into the matrix?

54 vues (au cours des 30 derniers jours)
Isti
Isti le 26 Avr 2012
Commenté : Walter Roberson le 17 Avr 2017
If i have a matrix like this:
2 1 4 6 2
9 4 6 1 2
5 3 2 8 3
7 2 1 9 3
7 1 8 2 4
3 5 4 1 2
then i want to stick on a vektor contain of "1" in the beginning of that matrix. so it'll be like this:
1 2 1 4 6 2
1 9 4 6 1 2
1 5 3 2 8 3
1 7 2 1 9 3
1 7 1 8 2 4
1 3 5 4 1 2
what to do? thanks before :')
  2 commentaires
Ashley Velasco
Ashley Velasco le 17 Avr 2017
Modifié(e) : Ashley Velasco le 17 Avr 2017
I'm a student just learning how to use MATLAB... but I'm pretty sure you can use the horzcat function to do it easily. Matlab has documentation on it.
https://www.mathworks.com/help/matlab/ref/horzcat.html
Walter Roberson
Walter Roberson le 17 Avr 2017
The [] operator defaults to horzcat, so the solution I listed
[ones(size(TheMatrix,1),1), TheMatrix]
is really the same as
horzcat( ones(size(TheMatrix,1),1), TheMatrix)

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Réponse acceptée

Walter Roberson
Walter Roberson le 26 Avr 2012
NewMatrix = [ones(size(TheMatrix,1),1), TheMatrix];
  2 commentaires
Isti
Isti le 26 Avr 2012
i'm sorry but it's not suitable in my case. is there any?
thanks
Walter Roberson
Walter Roberson le 26 Avr 2012
Sorry, I've corrected.

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Plus de réponses (2)

Isti
Isti le 26 Avr 2012
then the result is like this:
1 1 1 1 1 1 2 1 4 6 2
1 1 1 1 1 1 9 4 6 1 2
1 1 1 1 1 1 5 3 2 8 3
1 1 1 1 1 1 7 2 1 9 3
1 1 1 1 1 1 7 1 8 2 4
1 1 1 1 1 1 3 5 4 1 2
is there another solution?

ike
ike le 26 Avr 2012
yours= [ 2 1 4 6 2; 9 4 6 1 2; 5 3 2 8 3; 7 2 1 9 3; 7 1 8 2 4; 3 5 4 1 2]
add=ones(6,1); concat=[add yours]
try this....

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