I have a point dataset (ESRI shp file)
each point has an associated weight (grams)
These are the weights of animal bones recovered from an archaeological
excavation
I am trying to import the shp file and then do a density plot of the weight
data, so:
#Import shp file
library(spatstat)
library(maptools)
library(sp)
S <- readShapePoints("flint.shp")
SP <- as(S, "SpatialPoints")
P <- as(SP, "ppp")
So that brings in the shp file but I want to assign the marks(m) so I can do
something like:
plot(density(P, 10))
But based on the weights (grams (not spatial weighting))
Can anyone help?
Thanks
Gary
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