ist. (though creates a 2d
result)
- Original Message -
From: 'Jon Hough' via Programming
To: programm...@jsoftware.com
Sent: Monday, April 18, 2016 7:54 PM
Subject: Re: [Jprogramming] Simple scalar multiplication of matrices
Thanks for the responses. It seems ravelling the lef
Thanks for the responses. It seems ravelling the left argument is the easiest
way to go.
On Tue, 4/19/16, 'Pascal Jasmin' via Programming
wrote:
Subject: Re: [Jprogramming] Simple scalar multiplication of matrices
To: "programm..
there is also the adverb (no source transforms)
(i. 1 4) *"1 1"1 2 i. 2 4
0 1 4 9
0 5 12 21
(or shorthand)
"1"1 2
- Original Message -
From: EelVex
To: Programming forum
Sent: Monday, April 18, 2016 4:49 AM
Subject: Re: [Jprogramming] Simple scalar multip
]
> On Behalf Of 'Jon Hough' via Programming
> Sent: maandag 18 april 2016 10:42
> To: Programming Forum
> Subject: [Jprogramming] Simple scalar multiplication of matrices
>
> I am sure there is a simple answer to this, but I would like to know it.
>
> Say I have two
was actually just trying that. Problem is, it has a dangling dimension
> (shape 1 4 2), which can be removed, but seems a little messy.
>
>
>
> On Mon, 4/18/16, EelVex wrote:
>
> Subject: Re: [Jprogramming] Simple scalar mu
removed, but seems a little messy.
>
>
>
> On Mon, 4/18/16, EelVex > wrote:
>
> Subject: Re: [Jprogramming] Simple scalar multiplication of matrices
> To: "Programming forum" >
> Date: Monday, April 18, 2016, 5:54
Thanks,
I was actually just trying that. Problem is, it has a dangling dimension (shape
1 4 2), which can be removed, but seems a little messy.
On Mon, 4/18/16, EelVex wrote:
Subject: Re: [Jprogramming] Simple scalar multiplication of matrices
Of course, you can still go by the dot product. Just don't sum:
a (] . *) |:b
10 14
22 30
36 48
52 68
On Mon, Apr 18, 2016 at 11:49 AM, EelVex wrote:
> If you remove the first axis of a you can multiply-1:
>
> (,a) *"1 b
> 10 22 36 52
> 14 30 48 68
>
> Do you really need a to be 1xn ?
>
>
Similar here, but I was going to add that you can embed the
ravel in the verb:
(,a)*" 1 b NB. same as EelVex
10 22 36 52
14 30 48 68
a (*"1, )~ b NB. hooking the ravel:
10 22 36 52
14 30 48 68
or
b (*"1, ) a NB. if you're ok with b f a
10 22 36 52
14 30 48 68
Mike
On
If you remove the first axis of a you can multiply-1:
(,a) *"1 b
10 22 36 52
14 30 48 68
Do you really need a to be 1xn ?
On Mon, Apr 18, 2016 at 11:41 AM, 'Jon Hough' via Programming <
programm...@jsoftware.com> wrote:
> I am sure there is a simple answer to this, but I would like to know it
I am sure there is a simple answer to this, but I would like to know it.
Say I have two matrices:
a =: 1 4 $ 1 2 3 4
b =: 2 4 $ 10 11 12 13 14 15 16 17
and I want to multiply a's single row element-wise with each of b's rows. Not
matrix multiplication, so the resulting matrix should have dimens
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