Re: [NTG-context] Metapost labeling question. Please help
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,...,1.3) 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 webpage : http://www.pragma-ade.nl / http://tex.aanhet.net 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 ___
Re: [NTG-context] Metapost labeling question. Please help
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 indi...@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,...,1.3) 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 webpage : http://www.pragma-ade.nl / http://tex.aanhet.net 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 ___ ___ 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 ___
Re: [NTG-context] Metapost labeling question. Please help
Am 03.04.2009 um 14:47 schrieb Curiouslearn: 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)) textext(\tfa decimal(tx)) Wolfgang ___ 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 ___
Re: [NTG-context] Metapost labeling question. Please help
Beautiful! Thanks, Wolfgang. On Fri, Apr 3, 2009 at 9:35 AM, Wolfgang Schuster schuster.wolfg...@googlemail.com wrote: Am 03.04.2009 um 14:47 schrieb Curiouslearn: 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)) textext(\tfa decimal(tx)) Wolfgang ___ 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 ___ ___ 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 ___
[NTG-context] Metapost labeling question. Please help
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)); endfor; \stopuseMPgraphic \useMPgraphic{labeltest} \stoptext I get (0.5,0.55, 0.6,0.65001,0.70001,0.75002,...,1.3) 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 webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : https://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost labeling question. Please help
On Fri, Apr 3, 2009 at 03:02, Curiouslearn wrote: 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)); endfor; \stopuseMPgraphic \useMPgraphic{labeltest} \stoptext I get (0.5,0.55, 0.6,0.65001,0.70001,0.75002,...,1.3) instead. I don't understand why I get more than 2 digits after 0.6. It's because you get exact numbers in the terms what metapost considers exact (multiples of 2^{-something}). You have exactly the same problem if you work with floating points with any other programming language. Is there a way to restrict the number of digits after the decimal point. Thanks very much. See page 18 of metapost manual (speaking of metapost manual present in TeX Live): - 6.2 Operators The length operator returns the number of characters in a string. For substring construction, the ⟨of operator⟩ substring is used like this: substring ⟨pair expression⟩ of ⟨string primary⟩ substring (2,4) of abcde is cd. - You can use substring (0,4) to truncate the number. 0.5 might need special treatment, so you either need to concatenate it with 0 at the end or you need to check the lenght of string before using substring. Mojca ___ 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 ___