Metapost

[David Arnold <darnold@northcoast.com>]

All,

The metapost file

input mp-tool

beginfig(1)
u=1in;

z0=(0,0);

drawdblarrow (-1u,0)--(1u,0);
label.rt(btex Real axis etex,(1.1u,0));

drawdblarrow (0,-1u)--(0,1u);
label.rt(btex Imaginary axis etex, (0.1,1u));

a:=0.7; b:=0.6;
z1=(a,b) scaled u;

drawarrow z0--z1;
label.rt (btex $(a,b)$ etex, z1);

label.top(btex $r$ etex, 0.5[z0,z1]);

label.rt(btex $\theta$ etex, (0.2,0.1) scaled u);
endfig;

end

produces complexplane.1. How do I include this in my Context document so
that correct fonts will be used. I tried

\placefigure
 [here][complex plane]{The complex plane.}
 {\externalfigure[chap1/complexplane.1]}

but I got a courier font substitution. Yuk! Can anyone help?