Mojca and Peter, thanks very much for your responses. I used Peter's
solution and it worked beautifully.
Does anyone know how I can change the size of these labels? If I try

textext(\tfa decimal(tx))

that does not work.

On Fri, Apr 3, 2009 at 6:52 AM, Peter Rolf <indiego@gmx.net> wrote:

> Curiouslearn schrieb:
>
>> Hi,
>>
>> I want the labels as (0.5,0.55,0.6,0.65,0.7,...,1) or
>> (0.50,0.55,0.60,0.65,0.70,...,1). Either of these two is fine.
>>
>> I tried the following code for this.
>>
>> \starttext
>>
>> \startuseMPgraphic{labeltest}
>> numeric rmin,rmax;
>> rmin := 0.5; rmax := 1;
>> ux := 25cm; uy :=10cm;
>> % draw axes
>> draw (rmin,0)*ux -- (rmax+0.1,0)*ux;
>> draw (rmin,0)*ux -- (rmin*ux,(1.1)*uy);
>> for x = 0.5 step 0.05 until 1.1:
>> label.bot(textext(decimal(x)),(x*ux,x*uy));
>>
> you accumulate the rounding error with every step of the loop. try to avoid
> such 'low value' steps if possible.
>
> for x = 10 step 1 until 22: % 0.05*20 to get an integer loop index
> tx := x/20; % correct value
> label.bot(textext(decimal(tx)),(tx*ux,tx*uy));
>
>
> Best wishes,  Peter
>
>  endfor;
>> \stopuseMPgraphic
>>
>> \useMPgraphic{labeltest}
>>
>> \stoptext
>>
>> I get (0.5,0.55, 0.6,0.65001,0.70001,0.75002,...,1.00003) instead. I don't
>> understand why I get more than 2 digits after 0.6. Is there a way to
>> restrict the number of digits after the decimal point.
>> Thanks very much.
>>
>> ------------------------------------------------------------------------
>>
>>
>> ___________________________________________________________________________________
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>>
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>>
>> ___________________________________________________________________________________
>>
>>
>
>
> --
>  "Es ist doch ein Trost,
>  das Geldgier manchmal blöd macht."
>
>            - Kottan in "Kottan ermittelt", Folge 9: "Die Einteilung" -
>
>
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : https://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
>
> ___________________________________________________________________________________
>