* Strange behavior with Metapost
@ 2014-05-27 20:19 Fabrice Couvreur
2014-05-27 20:25 ` Hans Hagen
0 siblings, 1 reply; 5+ messages in thread
From: Fabrice Couvreur @ 2014-05-27 20:19 UTC (permalink / raw)
To: mailing list for ConTeXt users
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Hello,
Why curve drawn is not that expected ?
Fabrice
\starttext
\startMPcode
input hvdm;
l:=2.8mm; r:=0.6; alfa:=45; beta:=0; gamma:=0;
defineDefaultArrow (l, r, alfa, beta, gamma);
numeric xmin, xmax, ymin, ymax;
xmin :=-2; xmax := 4; ymax :=5 ;ymin:=-1; u := 1cm;
pickup pencircle scaled 1pt ;
drawarrow ((xmin,0) -- (xmax,0)) scaled u;
drawarrow ((0,ymin) -- (0,ymax)) scaled u;
draw tightfunction ("x", "2*(x-1)*(x-1)+2", xmin, xmax,
(xmax-xmin)/10)
scaled u;
setbounds currentpicture to boundingbox (((xmin,ymin) --
(xmax,ymax)) scaled u);
\stopMPcode
\stoptext
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___________________________________________________________________________________
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 : http://foundry.supelec.fr/projects/contextrev/
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Strange behavior with Metapost 2014-05-27 20:19 Strange behavior with Metapost Fabrice Couvreur @ 2014-05-27 20:25 ` Hans Hagen 2014-05-27 22:09 ` Fabrice 0 siblings, 1 reply; 5+ messages in thread From: Hans Hagen @ 2014-05-27 20:25 UTC (permalink / raw) To: ntg-context On 5/27/2014 10:19 PM, Fabrice Couvreur wrote: > Hello, > Why curve drawn is not that expected ? > Fabrice use /20 > \starttext > \startMPcode > input hvdm; > l:=2.8mm; r:=0.6; alfa:=45; beta:=0; gamma:=0; > defineDefaultArrow (l, r, alfa, beta, gamma); > numeric xmin, xmax, ymin, ymax; > xmin :=-2; xmax := 4; ymax :=5 ;ymin:=-1; u := 1cm; > pickup pencircle scaled 1pt ; > drawarrow ((xmin,0) -- (xmax,0)) scaled u; > drawarrow ((0,ymin) -- (0,ymax)) scaled u; > draw tightfunction ("x", "2*(x-1)*(x-1)+2", xmin, xmax, > (xmax-xmin)/10) > scaled u; > setbounds currentpicture to boundingbox (((xmin,ymin) -- > (xmax,ymax)) scaled u); > \stopMPcode > \stoptext > > > > ___________________________________________________________________________________ > 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 : http://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ > -- ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________ 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 : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Strange behavior with Metapost 2014-05-27 20:25 ` Hans Hagen @ 2014-05-27 22:09 ` Fabrice 2014-05-27 22:26 ` Hans Hagen 0 siblings, 1 reply; 5+ messages in thread From: Fabrice @ 2014-05-27 22:09 UTC (permalink / raw) To: ntg-context It works. But how to choose not to avoid this problem (/10 or /20 or ....) ? Another little problem: if I use " setbounds currentpicture to boundingbox (((xmin,ymin) --(xmax,ymax)) scaled u) ; " the images are not adjusted to the BoundingBox. So I'm back to my original idea. Fabrice > \midaligned{% > \startcombination[4*1] > {% > \startMPcode > input hvdm; > l:=2.8mm; r:=0.6; alfa:=45; beta:=0; gamma:=0; > defineDefaultArrow (l, r, alfa, beta, gamma); > numeric xmin, xmax, ymin, ymax; > xmin := -2; xmax :=4; ymax :=5 ;ymin:=-1; u := 0.7cm; > pickup pencircle scaled 1pt ; > drawarrow ((xmin,0) -- (xmax,0)) scaled u; > drawarrow ((0,ymin) -- (0,ymax)) scaled u; > draw tightfunction ("x", "-2*(x-1)*(x-1)+2", xmin, xmax, > (xmax-xmin)/20) > scaled u; > path screen; > screen=(xmin,ymin)*u--(xmax,ymin)*u--(xmax,ymax)*u--(xmin,ymax)*u--cycle; > clip currentpicture to screen; > \stopMPcode > }{1.} > {% > \startMPcode > input hvdm; > l:=2.8mm; r:=0.6; alfa:=45; beta:=0; gamma:=0; > defineDefaultArrow (l, r, alfa, beta, gamma); > numeric xmin, xmax, ymin, ymax; > xmin := -2; xmax :=4; ymax :=5 ;ymin:=-1; u := 0.7cm; > pickup pencircle scaled 1pt ; > drawarrow ((xmin,0) -- (xmax,0)) scaled u; > drawarrow ((0,ymin) -- (0,ymax)) scaled u; > draw tightfunction ("x", "0.5*(x-1)*(x-1)+2", xmin, xmax, > (xmax-xmin)/20) > scaled u; > path screen; > screen=(xmin,ymin)*u--(xmax,ymin)*u--(xmax,ymax)*u--(xmin,ymax)*u--cycle; > clip currentpicture to screen; > \stopMPcode > } > {2.} > {% > \startMPcode > input hvdm; > l:=2.8mm; r:=0.6; alfa:=45; beta:=0; gamma:=0; > defineDefaultArrow (l, r, alfa, beta, gamma); > numeric xmin, xmax, ymin, ymax; > xmin := -2; xmax :=4; ymax :=5 ;ymin:=-1; u := 0.7cm; > pickup pencircle scaled 1pt ; > drawarrow ((xmin,0) -- (xmax,0)) scaled u; > drawarrow ((0,ymin) -- (0,ymax)) scaled u; > draw tightfunction ("x", "-0.5*(x-1)*(x-1)+2", xmin, xmax, > (xmax-xmin)/20) > scaled u; > path screen; > screen=(xmin,ymin)*u--(xmax,ymin)*u--(xmax,ymax)*u--(xmin,ymax)*u--cycle; > clip currentpicture to screen; > \stopMPcode > } > {3.} > {% > \startMPcode > input hvdm; > l:=2.8mm; r:=0.6; alfa:=45; beta:=0; gamma:=0; > defineDefaultArrow (l, r, alfa, beta, gamma); > numeric xmin, xmax, ymin, ymax; > xmin := -2; xmax :=4; ymax :=5 ;ymin:=-1; u := 0.7cm; > pickup pencircle scaled 1pt ; > drawarrow ((xmin,0) -- (xmax,0)) scaled u; > drawarrow ((0,ymin) -- (0,ymax)) scaled u; > draw tightfunction ("x", "2*(x-1)*(x-1)+2", xmin, xmax, > (xmax-xmin)/20) > scaled u; > path screen; > screen=(xmin,ymin)*u--(xmax,ymin)*u--(xmax,ymax)*u--(xmin,ymax)*u--cycle; > clip currentpicture to screen; > \stopMPcode} > {4.} > \stopcombination} ___________________________________________________________________________________ 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 : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Strange behavior with Metapost 2014-05-27 22:09 ` Fabrice @ 2014-05-27 22:26 ` Hans Hagen 2014-05-28 10:59 ` Fabrice 0 siblings, 1 reply; 5+ messages in thread From: Hans Hagen @ 2014-05-27 22:26 UTC (permalink / raw) To: mailing list for ConTeXt users On 5/28/2014 12:09 AM, Fabrice wrote: > It works. But how to choose not to avoid this problem (/10 or /20 or > ....) ? well, you can guess the amount of steps ... but the 1000 you had originally was way too much ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________ 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 : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Strange behavior with Metapost 2014-05-27 22:26 ` Hans Hagen @ 2014-05-28 10:59 ` Fabrice 0 siblings, 0 replies; 5+ messages in thread From: Fabrice @ 2014-05-28 10:59 UTC (permalink / raw) To: ntg-context Hello, Firstly, thank you for your reply. However, I would like some further explanation please. If I understand, but I'm not sure at all, calculating (xmax-xmin) / 10 gives the number of points to draw the curve. However, in my example, xmax = 4 and xmin = -2, so (xmax-xmin) / 10 = 0.6. My question is : how do you find the value in 1000 ? ___________________________________________________________________________________ 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 : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-05-28 10:59 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-05-27 20:19 Strange behavior with Metapost Fabrice Couvreur 2014-05-27 20:25 ` Hans Hagen 2014-05-27 22:09 ` Fabrice 2014-05-27 22:26 ` Hans Hagen 2014-05-28 10:59 ` Fabrice
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