Angelo,
I knew I recognize this code.
I did it this way.

plot(density.ppp(ppbog07, 0.003))
plot(ppbog07p, add=T, cex=0.1)
plot(mapabarrios,add=T)
you have to plot the ppp.
Here You get the density, de points and the neighborhoods.
Juan


On Thu, Sep 1, 2011 at 6:12 PM, Angelo Moreno <amorenos1@ucentral.edu.co>wrote:

> Hi, I have  created a ppp with coordinates(longitude/lattitude),I have
> obtained the density plot:
>
> plot(density.ppp(ppbog07, 0.0003))
>
> then I need, and I would like to see the shape map over this plot...I have
> tried with this:
>
> plot(shape,add=T)
>
> but it doesn`t work. What problem could exist or maybe exist another way?
>
> Thanks!
>
> --
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>
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-- 
Juan Tomás Sayago Gómez
Graduate Research Assistant
West Virginia University
886 Chestnut Ridge Road, Room 520
P.O. Box 6825
Morgantown, WV 26506-6825

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