From: Peter Rolf <indiego@gmx.net>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Metapost labeling question. Please help
Date: Fri, 03 Apr 2009 12:52:47 +0200 [thread overview]
Message-ID: <49D5EA7F.7040108@gmx.net> (raw)
In-Reply-To: <3b4b12310904021802o35521148t8508688ea24ea547@mail.gmail.com>
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.
>
>
> ------------------------------------------------------------------------
>
> ___________________________________________________________________________________
> 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
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> archive : https://foundry.supelec.fr/projects/contextrev/
> wiki : http://contextgarden.net
> ___________________________________________________________________________________
>
--
"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
___________________________________________________________________________________
next prev parent reply other threads:[~2009-04-03 10:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-03 1:02 Curiouslearn
2009-04-03 5:35 ` Mojca Miklavec
2009-04-03 10:52 ` Peter Rolf [this message]
2009-04-03 12:47 ` Curiouslearn
2009-04-03 13:35 ` Wolfgang Schuster
2009-04-03 13:48 ` Curiouslearn
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