[R] R_Calculating Thiessen weights for an area with irregular boundary

[Rolf Turner]

On 22/04/15 22:43, Manoranjan Muthusamy wrote:

<SNIP>

> 4. <SNIP>
>      How can I show the Dirichlet tile names (i.e. 1,2,3,....,8) in the
> plot?

There's no built-in way at the moment as far as I can tell.

One way to get the tiles to be labelled/numbered in the plot would be:

plot(dX)
text(X,labels=1:npoints(X))

Slightly sexier:

cents <- as.data.frame(t(sapply(tiles(dX),centroid.owin)))
plot(dX)
text(cents,labels=1:nrow(cents))

Is this satisfactory?

cheers,

Rolf Turner

-- 
Rolf Turner
Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
Home phone: +64-9-480-4619