Re: constructing a matrix from a vector

[ishi soichi]

Ah, yes. You're taking that course as well? :)

I wanted to execute element-wise subtraction.

4 5 6         1 2 3

7 8 9     - 

1 2 3
4 5 6

like that. ".-" doesn't do the job.  If there is a better way, it's great.

But my solution was correct at least using repmat :)

soichi

2011/10/19 Jordi Gutiérrez Hermoso <address@hidden>

On 18 October 2011 23:02, ishi soichi <address@hidden> wrote:
> say, we have a vector,
> (1 2 3)
> Can we construct a matrix like
>
> 1 2 3
> 1 2 3
> 1 2 3
> 1 2 3
> ?

Why do you want such a matrix? Note that there is usually a better
solution than using repmat. What's the larger context? Is this for the
machine learning class? ;-)

- Jordi G. H.