Color fill and line width?

Hello all,

I am trying to generate some plots with contour colored fills. However, I
need also to have some specific contours with a different thickness of the
contour line. FINT and FLINE doesn't allow the line width to be specified
for specific contours.

The solution I found was to superimpose contours using a different
line width using CINT and LINE for the same field.
However, the contours don't match exactly...

Here are the relevant options given to gdcntr (where colors have been
redefined with gpcolors) :
SCALE =3D 0
HILO =3D
HLSYM =3D
LATLON =3D 0
CONTUR =3D 3/1
CTYPE =3D F
FLINE =3D 4;5;6;7;8;9;10;11;12;13;14;15;16;17;18;19;20;21;22;23;24;25/1
FINT =3D -32;-28;-24;-20;-16;-12;-8;-4;0;4;8;12;16;20;24;28;32;36;40;44
CLRBAR =3D 1//CL/.005;.5/.75;.01|1/2/111/221/l/hw
run

CINT =3D 4
LINE =3D 1 / 2 / 4
run

CINT =3D 16;999
LINE =3D 1 / 2 / 8
run

exit

I thus get an image like this one:
http://meteocentre.com/analyse/local/eur_850_tpw.gif

where we can see that the lines don't match exactly, due to some smoothing
which is not the same.
Using CONTUR =3D 0 did not solve the problem either, and the plots looked
uglier...

Any solution?

--
Christian Pag=E9
UQAM