[NTG-context] Re: Problem with Metapost

3 Nov 2024


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

Le dim. 3 nov. 2024 à 17:08, Mikael Sundqvist  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
 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
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...
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