[Inkscape-user] discrete color scale object becomes continuous in eps export

dear all,

I have a inkscape problem that I do not understand. An object showing a discrete color scale is converted to a continuous scale in the eps export.

here is the example file http://www.climate.unibe.ch/~muthers/exchange/drawing.svg

this is the exported file http://www.climate.unibe.ch/~muthers/exchange/drawing.eps

any help is appreciated!

inkscape version is 0.48.4 on arch linux.

cheers, stefan