[R-sig-Geo] How to convert results generated by "filled.contour" to shapefiles?

[Hisaji ONO]

Hello.

 Currently I have developed geo-spatial mining tool using
R with spdep, spgwr and other packages as
OpenJUMP(http://www.openjump.org)'s plug-ins.

 I've already implemented contouring function using
contourlines function.

 I'd like to fill colours between levels of contours.

 So does anyone try to convert results generated by
"filled.contour" to shapefiles?

 Could you share the knowledge?


 Regards.

 P.S.

  I have received "Applied Spatial Data Analysis with R
(Use R) " from Amazon Japan.

 It's very nice and useful book. Thanks.