If Jen Zhen is willing to adopt a smoothing approach, Jen Zhen might consider using -spgrid- and -spkde-, both available from the Boston SSC Archive.
Maurizio
> Dear list members,
>
> I am using Maurizio Pisati's -spmap- to draw maps of different
> municipalities and color the area of each municipality according to
> the value of some continuous variable. Unfortunately there are some
> areas for which I have the polygon data, but for which I do not have
> data on the continuous variable. Therefore I would like to color the
> no-data areas with the color corresponding to a value interpolated
> across the respective municipality's surrounding areas. Is there any
> option for this, which I have overlooked?
>
> Otherwise, I think I first need to find, ideally automatically, for
> each municipality all surrounding municipalities. Can anyone recommend
> a way to do so?
>
> Thanks very much!
>
> JZ
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