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.couvr...@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
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