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From: Lisandro on 5 May 2010 14:57
Hi all,

Does anyone knows how to decompose a number into digits, e.g.

I have a column with the number 4321, and I want to decompose digit-wise into 4 columns, 4,3,2,1

Thanks!
L
From: TideMan on 5 May 2010 15:40
On May 6, 6:57 am, "Lisandro " <lisandro.quino...(a)gmail.com> wrote:
> Hi all,
>
> Does anyone knows how to decompose a number into digits, e.g.
>
> I have a column with the number 4321, and I want to decompose digit-wise into 4 columns, 4,3,2,1
>
> Thanks!
> L

Use the ASCII coding:
char(num2str(4321))-48
From: dpb on 5 May 2010 16:05
Lisandro wrote:
....

> Does anyone knows how to decompose a number into digits, e.g.
....

Seems to be popular, recently...

For alternatives besides Tideman's answer, see thread "Return digits of
a number as a list" just within the last week or so...

--
From: Jan Simon on 5 May 2010 16:24
Dear Lisandro!

> Does anyone knows how to decompose a number into digits, e.g.
> I have a column with the number 4321, and I want to decompose digit-wise into 4 columns, 4,3,2,1

What is a "column with the number 4321" ?
If I assume, you mean a scalar, then you could try to convert the number to a string temporarily:
x = 4321
s = sprintf('%.16g', x)
v = zeros(1, length(s));
for iv = 1:length(s)
v(iv) = sscanf(s(iv), '%d', 1);
end

You can convert the chars in the string [s] directly also:
v2 = s - '0'

Is a homework?

Kind regards, Jan
From: Lisandro on 5 May 2010 17:27
"Jan Simon" <matlab.THIS_YEAR(a)nMINUSsimon.de> wrote in message <hrsk54$rg8$1(a)fred.mathworks.com>...
> Dear Lisandro!
>
> > Does anyone knows how to decompose a number into digits, e.g.
> > I have a column with the number 4321, and I want to decompose digit-wise into 4 columns, 4,3,2,1
>
> What is a "column with the number 4321" ?
> If I assume, you mean a scalar, then you could try to convert the number to a string temporarily:
> x = 4321
> s = sprintf('%.16g', x)
> v = zeros(1, length(s));
> for iv = 1:length(s)
> v(iv) = sscanf(s(iv), '%d', 1);
> end
>
> You can convert the chars in the string [s] directly also:
> v2 = s - '0'
>
> Is a homework?
>
> Kind regards, Jan

No is not a homework...just curiosity, thanks all for your prompt replies!
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