Hi there GIS people

I have a problem that perhaps is simple. I hope you may be able to help
me.

I would like to get a network diagram on to a map. I can produce a NZ
map or network diagram but cant seem to put the network diagram on to
the NZ map.

A) NZ map
plot.polylist(NZ.regions.map, border = "red", xaxt = "n",lty=10, yaxt =
"n", xlab = "Easting (km)", ylab = "Northing
(km)")

B) Network diagram
gplot(trace.sna, thresh = 5000, coord = coord/10000, displaylabels =
TRUE, 
   edge.lwd = edge.width,  label.cex = 0.25, boxed.labels = FALSE, 
   displayisolates = FALSE, add=TRUE)

I would really appreciate your asistance.

Regards

Andy


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