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From: Benjamin Hell on 22 Mar 2010 03:46
Hi,
Mathematicas default behavior with representing floating point numbers
seems to be that numbers greater or equal to 10^-5 are shown without and
numbers smaller than 10^-5 are shown with a sort of Scientific notation,
i.e. floatingpointnumber x 10^-n.
So for example the input 0.00001 delivers 0.00001, but the input
0.000001 delivers the output 1.\[CenterDot]10^-6 .
As I want to use ToString on the InputForm of such a floating point
number and using that string in a chart I want to be able to control
that behaviour. This means I want to control when scientific notation is
used and when not, because this affects the string I get from ToString.
I am sure there are a lot of ways to get where I want to, but at the
moment I am kind of stuck and don't find the right Forms or Parameters
for displaying the number the way I want it to. Hope someone can help me
out once again.

Thanks in advance,
Benjamin

From: Bob Hanlon on 22 Mar 2010 07:42

Use AccountingForm


Bob Hanlon

---- Benjamin Hell <hell(a)exoneon.de> wrote:

=============
Hi,
Mathematicas default behavior with representing floating point numbers
seems to be that numbers greater or equal to 10^-5 are shown without and
numbers smaller than 10^-5 are shown with a sort of Scientific notation,
i.e. floatingpointnumber x 10^-n.
So for example the input 0.00001 delivers 0.00001, but the input
0.000001 delivers the output 1.\[CenterDot]10^-6 .
As I want to use ToString on the InputForm of such a floating point
number and using that string in a chart I want to be able to control
that behaviour. This means I want to control when scientific notation is
used and when not, because this affects the string I get from ToString.
I am sure there are a lot of ways to get where I want to, but at the
moment I am kind of stuck and don't find the right Forms or Parameters
for displaying the number the way I want it to. Hope someone can help me
out once again.

Thanks in advance,
Benjamin



From: dh on 22 Mar 2010 07:43
Hi Benjamin,
with some effort you can use NumberForm and all its options to taylor
the output as you please. There are also ScientificForm,
EnegeneeringForm, PaddedForm..
Daniel


On 22.03.2010 08:46, Benjamin Hell wrote:
> Hi,
> Mathematicas default behavior with representing floating point numbers
> seems to be that numbers greater or equal to 10^-5 are shown without and
> numbers smaller than 10^-5 are shown with a sort of Scientific notation,
> i.e. floatingpointnumber x 10^-n.
> So for example the input 0.00001 delivers 0.00001, but the input
> 0.000001 delivers the output 1.\[CenterDot]10^-6 .
> As I want to use ToString on the InputForm of such a floating point
> number and using that string in a chart I want to be able to control
> that behaviour. This means I want to control when scientific notation is
> used and when not, because this affects the string I get from ToString.
> I am sure there are a lot of ways to get where I want to, but at the
> moment I am kind of stuck and don't find the right Forms or Parameters
> for displaying the number the way I want it to. Hope someone can help me
> out once again.
>
> Thanks in advance,
> Benjamin
>


--

Daniel Huber
Metrohm Ltd.
Oberdorfstr. 68
CH-9100 Herisau
Tel. +41 71 353 8585, Fax +41 71 353 8907
E-Mail:<mailto:dh(a)metrohm.com>
Internet:<http://www.metrohm.com>


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