Hi
Mauro - thanks for that as that makes it clear whats happening under the
bonnet. So, what if you then wanted to sum...
1.4827
1.48069
0.884897
1.22739
.... is that possible or am I being a bit dumb here.
Regards
On Thursday, 12 March 2015 10:59:34 UTC, Mauro wrote:
>
> > Can I still sum?
>
>
> Maybe it's clearer like this:
> julia> [ x[i-4:i-1] for i = [6,7,8]]
> 3-element Array{Array{Float64,1},1}:
> [0.392471,0.775959,0.314272,0.390463]
> [0.775959,0.314272,0.390463,0.180162]
> [0.314272,0.390463,0.180162,0.656762]
>
> julia> sum(ans)
> 4-element Array{Float64,1}:
> 1.4827
> 1.48069
> 0.884897
> 1.22739
>
> So 1.4827 = ans[1][1]+ans[2][1]+ans[3][1]
>
> > On Thursday, 12 March 2015 09:50:19 UTC, Mauro wrote:
> >>
> >> > const x = rand(8)
> >> > [ x[i-4:i-1] for i = 6] .. this gives me a 4 element array.
> >>
> >> This seems a bit odd, what are you trying to achieve here? Anyway it
> >> produces a Array{Array{Float64,1},1}, i.e. an array of arrays
> containing
> >> one array.
> >>
> >> > I now want to sum the ouput - this is what I tried ...
> >> > sum([ x[i-4:i-1] for i = 6]) ... what am I doing wrong?
> >>
> >> This sums all first elements, second elements, etc. As there is only
> on
> >> array in the array, it doesn't do all that much.
> >>
>
>
