Re: [Bug-apl] inner product

[enztec]

Hi

I assume you mean the vectors both have same length as their single dimension 
(no first or last - the same)

making them into 1 4⍴   arrays then requires the ⍉ use

don't you treat vectors differntly in the gnuapl code from 'true arrays' with 2 
(or more dimensions)?


On Fri, 17 Mar 2017 18:18:58 +0100
Juergen Sauermann <address@hidden> wrote:

> Hi,
> 
> yes. Because the first dimension of a is 4 and the last dimension of b is 
> also 4.
> 
> /// Jürgen
> 
> 
> On 03/17/2017 06:05 PM, address@hidden wrote:
> 
> yes last dimension of a must be = to first dimension of b
> 
> but then
> 
> x←1 2 3 4
> y←1 3 3 3
> 
> x+.=y   works 
> 
> 
> On Fri, 17 Mar 2017 17:29:24 +0100
> Juergen Sauermann <address@hidden> wrote:
> 
> Hi,
> 
> the number of columns in a must match the number of rows in b (or the other 
> way around,
> I don't quite remember).
> 
> Try:
> 
>       a+.=⍉b
> 3 0 0 0 0
> 0 3 0 0 0
> 0 0 3 0 0
> 0 0 0 3 0
> 0 0 0 0 3
> 
> /// Jürgen
> 
> 
> On 03/17/2017 05:17 PM, address@hidden wrote:
> Hi
> 
> what am i missing here?
> 
> a←b←5 3⍴⍳8
> 
> a=b
> 
> +/a=b
> 
> a+.=b     length error
> 
> 
> 
> 
> 
> 
>