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[amibroker] Re: Can Amibroker handle small decimal numbers?


  • Date: Wed, 17 Feb 2010 22:00:06 -0000
  • From: "zozuzoza" <zozuka@xxxxxxxxx>
  • Subject: [amibroker] Re: Can Amibroker handle small decimal numbers?

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Hi Howard

I meant kratio for example that have typical values of 0.01. If I use it as a fitness function, do I need to multiply by 100?

Or if I optimise a parameter that have 0.01 step?

Br,
Zozu

--- In amibroker@xxxxxxxxxxxxxxx, Howard B <howardbandy@xxx> wrote:
>
> Hi Zozu --
> 
> How small are the numbers and how are you using them?
> 
> Multiplying by 100 or 1000 is often useful when working with indicator
> values so that they scale reasonably when plotted.
> 
> Multiplying by 100 or 1000 may be useful when combining a variable with a
> small value with a variable with a large value so that the significant
> digits of the smaller value are retained.
> 
> Adding a constant and / or multiplying by a constant may be necessary to
> create a number that has a positive integer part if that value will be added
> to a composite and stored in the volume field.
> 
> Thanks,
> Howard
> 
> 
> On Tue, Feb 16, 2010 at 5:23 AM, droskill <droskill@xxx> wrote:
> 
> >
> >
> > I haven't read the book - but for me it hasn't been a problem - I routinely
> > use small numbers as you describe them....
> >
> >
> > --- In amibroker@xxxxxxxxxxxxxxx <amibroker%40yahoogroups.com>, "zozuzoza"
> > <zozuka@> wrote:
> > >
> > > Hi,
> > > I am reading in Howard's book that 'Amibroker handles the negative values
> > without and problem, but the small numbers loose all the significance beyond
> > the decimal point.' Furthermore Howard recommend to multiply the numbers
> > below 1 by 100 or 1000.
> > >
> > > Is it really the case?
> > >
> >
> >  
> >
>




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