[Numpy-discussion] concatenate an array with a number

Robin robince@gmail....
Mon Aug 4 11:19:46 CDT 2008


On Mon, Aug 4, 2008 at 3:58 PM, Nicolas Chopin
<nicolas.chopin@bris.ac.uk> wrote:
> Hi list,
> I want to do this:
>
> y = concatenate(x[0],x)
>
> where x is a 1d array.
> However, the only way I managed to make this work is:
>
> y = concatenate( array((x[0],),ndmin=1), x)
>
> which is kind of cryptic. (If I remove ndmin, numpy still complains.)

I think r_[x[0],x] will do you what you want...

Robin


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