[NTG-context] Problem with Metapost

[NTG-context] Problem with Metapost

[Fabrice Couvreur]

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Hi,
I think I have never encountered this problem. Recently, I can no longer
have a succession of figures with Metapost; only the first one appears.
Thanks.
Fabrice

\starttext
\dorecurse{3}{\startMPcode
            numeric u;
            u = 0.5cm;
            ymax = xmax = 7;
            xmin = ymin = -1;
            interim ahangle := 30;
            z0 = (1u,1u);
            z1 = (2u,3u);
            z2 = (0,5u);
            path xx, yy;
            xx = ((xmin,0) -- (xmax,0)) scaled u;
            yy = ((0,ymin) -- (0,ymax)) scaled u;
            drawoptions(scaled .5 withcolor .7 white);
            for i = ceiling ymin upto floor ymax: draw xx shifted (0,i*u);
endfor
            for i = ceiling xmin upto floor xmax: draw yy shifted (i*u,0);
endfor
            drawoptions();
            path fuzz;
            fuzz = z0 -- z1 -- z2 -- cycle;
            fill fuzz withcolor 0.7[blue,white];
            draw fuzz withcolor blue;
            fill fuzz shifted(4u,1u) withcolor 0.7[blue,white];
            draw fuzz shifted(4u,1u) withcolor blue;
            drawoptions(withpen pencircle scaled 1pt);
            drawarrow z0 -- z0 shifted (4u,1u);
            drawarrow z1 -- z1 shifted (4u,1u);
            drawarrow z2 -- z2 shifted (4u,1u);
            drawoptions();
            label("\im{\vec{v}}", (3.5u,3u));
            label.llft("\im{A}",z0);
            label.lrt("\im{B}",z0 shifted (4u,1u));

          \stopMPcode}


\stoptext

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___________________________________________________________________________________
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[NTG-context] Re: Problem with Metapost

[Mikael Sundqvist]

Hi,

you get an error of redundant equations. Try

            numeric ymax,xmax ; ymax := 7 ; xmax := 7;
            numeric xmin,ymin ; xmin :=-1 ; ymin := -1;

and it might work.

(It is a bit weird that ymax = 7 several times result in an error, but ... )

/Mikael

On Sun, Nov 3, 2024 at 4:47 PM Fabrice Couvreur
<fabrice1.couvreur@gmail.com> wrote:
>
> Hi,
> I think I have never encountered this problem. Recently, I can no longer have a succession of figures with Metapost; only the first one appears.
> Thanks.
> Fabrice
>
> \starttext
> \dorecurse{3}{\startMPcode
>             numeric u;
>             u = 0.5cm;
>             ymax = xmax = 7;
>             xmin = ymin = -1;
>             interim ahangle := 30;
>             z0 = (1u,1u);
>             z1 = (2u,3u);
>             z2 = (0,5u);
>             path xx, yy;
>             xx = ((xmin,0) -- (xmax,0)) scaled u;
>             yy = ((0,ymin) -- (0,ymax)) scaled u;
>             drawoptions(scaled .5 withcolor .7 white);
>             for i = ceiling ymin upto floor ymax: draw xx shifted (0,i*u); endfor
>             for i = ceiling xmin upto floor xmax: draw yy shifted (i*u,0); endfor
>             drawoptions();
>             path fuzz;
>             fuzz = z0 -- z1 -- z2 -- cycle;
>             fill fuzz withcolor 0.7[blue,white];
>             draw fuzz withcolor blue;
>             fill fuzz shifted(4u,1u) withcolor 0.7[blue,white];
>             draw fuzz shifted(4u,1u) withcolor blue;
>             drawoptions(withpen pencircle scaled 1pt);
>             drawarrow z0 -- z0 shifted (4u,1u);
>             drawarrow z1 -- z1 shifted (4u,1u);
>             drawarrow z2 -- z2 shifted (4u,1u);
>             drawoptions();
>             label("\im{\vec{v}}", (3.5u,3u));
>             label.llft("\im{A}",z0);
>             label.lrt("\im{B}",z0 shifted (4u,1u));
>
>           \stopMPcode}
>
>
> \stoptext
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
> ___________________________________________________________________________________
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: Problem with Metapost

[Fabrice Couvreur]

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Hi Mikael,
It works, thank you very much.
Fabrice

Le dim. 3 nov. 2024 à 17:08, Mikael Sundqvist <mickep@gmail.com> a écrit :

> Hi,
>
> you get an error of redundant equations. Try
>
>             numeric ymax,xmax ; ymax := 7 ; xmax := 7;
>             numeric xmin,ymin ; xmin :=-1 ; ymin := -1;
>
> and it might work.
>
> (It is a bit weird that ymax = 7 several times result in an error, but ...
> )
>
> /Mikael
>
> On Sun, Nov 3, 2024 at 4:47 PM Fabrice Couvreur
> <fabrice1.couvreur@gmail.com> wrote:
> >
> > Hi,
> > I think I have never encountered this problem. Recently, I can no longer
> have a succession of figures with Metapost; only the first one appears.
> > Thanks.
> > Fabrice
> >
> > \starttext
> > \dorecurse{3}{\startMPcode
> >             numeric u;
> >             u = 0.5cm;
> >             ymax = xmax = 7;
> >             xmin = ymin = -1;
> >             interim ahangle := 30;
> >             z0 = (1u,1u);
> >             z1 = (2u,3u);
> >             z2 = (0,5u);
> >             path xx, yy;
> >             xx = ((xmin,0) -- (xmax,0)) scaled u;
> >             yy = ((0,ymin) -- (0,ymax)) scaled u;
> >             drawoptions(scaled .5 withcolor .7 white);
> >             for i = ceiling ymin upto floor ymax: draw xx shifted
> (0,i*u); endfor
> >             for i = ceiling xmin upto floor xmax: draw yy shifted
> (i*u,0); endfor
> >             drawoptions();
> >             path fuzz;
> >             fuzz = z0 -- z1 -- z2 -- cycle;
> >             fill fuzz withcolor 0.7[blue,white];
> >             draw fuzz withcolor blue;
> >             fill fuzz shifted(4u,1u) withcolor 0.7[blue,white];
> >             draw fuzz shifted(4u,1u) withcolor blue;
> >             drawoptions(withpen pencircle scaled 1pt);
> >             drawarrow z0 -- z0 shifted (4u,1u);
> >             drawarrow z1 -- z1 shifted (4u,1u);
> >             drawarrow z2 -- z2 shifted (4u,1u);
> >             drawoptions();
> >             label("\im{\vec{v}}", (3.5u,3u));
> >             label.llft("\im{A}",z0);
> >             label.lrt("\im{B}",z0 shifted (4u,1u));
> >
> >           \stopMPcode}
> >
> >
> > \stoptext
> >
> ___________________________________________________________________________________
> > If your question is of interest to others as well, please add an entry
> to the Wiki!
> >
> > maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> > webpage  : https://www.pragma-ade.nl / https://context.aanhet.net
> (mirror)
> > archive  : https://github.com/contextgarden/context
> > wiki     : https://wiki.contextgarden.net
> >
> ___________________________________________________________________________________
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
>
> ___________________________________________________________________________________
>

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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 / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________