Scientific notation problem

[Francesco Cat]

2008/4/30 Yunfei Ding <yfding at gmail.com>:
> However if I have a matrix:
>
> A=[0,1e0,0;1e-9,0,0]
>
> Octave gives:
>
> A =
>
>    0.00000   1.00000   0.00000
>    0.00000   0.00000   0.00000
>
> So I lose the data 1e-9 in the second row. It seems like Octave decides what
> to do according to the first row of the data. How can I force it to use
> scientific notation all the time?

you can use the "format" command;
you probably want to use "format short e", but also read the "help
format" for lots of interesting informations :)

Francesco