Dear list,

the example below has shifted axes. I updated to the latest standalone
earlier today. The problem was not present some weeks ago.

In particular look at the red line that should start from the origin...

\starttext
\startMPpage
ut:=1.0cm;
ux:=0.6cm;

vardef diffp(expr riktn) =
 ((-1,0)--(1,0)) rotatedaround (origin,angle(ut,riktn*ux))
enddef;

path taxel,xaxel;
taxel:=((-1.4,0)--(5.4,0));
xaxel:=((0,-1.4)--(0,4.6));
drawarrow taxel xyscaled(ut,ux);
drawarrow xaxel xyscaled(ut,ux);

label.bot("$t$", (point length(taxel) of taxel) xyscaled(ut,ux));
label.lft("$P$", (point length(xaxel) of xaxel) xyscaled(ut,ux));

draw image(
 vardef fun(expr t, x) = x*(3-x) enddef;
 for i=-1 step 0.5 until 5 :
  for j=-1 step 0.5 until 4 :
    ii:=i;
    jj:=j;
    draw diffp(fun(ii,jj)) scaled 2bp shifted (ii*ut,jj*ux);
  endfor;
 endfor;

draw function (2, "x", "3/(1+2*exp(-3*x))" ,-1, 5, 1/5) xyscaled (ut,ux);

draw (0,0)--(3,3) xyscaled(ut,ux) withcolor darkred;

);
\stopMPpage
\stoptext

/Mikael

Attachment: ctx-listexample17.pdf
Description: Adobe PDF document

___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Reply via email to