Does anyone have any experience plotting complex polygons on a
scatterplot3d display? I would like to present some spatially binned
data in a 3-d type plot with background polygons (i.e.. a filled
coastline map). I can get the coastline onto the plot window as a
line type but cannot figure out how to fill the shape. I'm certain it
may be possible but might require a bit of digging into the
scatterplot3d code and rotational method.
Any and all help or suggestions appreciated.
EX.
library(scatterplot3d)
# get a coastline
library(maps)
library(mapdata)
coast<-map('worldHires', c('usa','canada'),xlim=c(-72,-67),
ylim=c(40,45),fill=TRUE, col='gray')
# note: substitute a simple polygon if you don't have maps and mapdata
# coast<-list()
# coast$x<-c(-70.5,-70.5,-70,-70)
# coast$y<-c(41.2,43,43,41.2)
lat<-c(41,41.5,42,42.5,43)
long<-c(-71,-69.5,-70,-70.2,-69.8)
weight<-c(80,20,30,30,10)
p3d<-scatterplot3d(long, lat, weight, angle=75, type='h', box=FALSE,
asp=1, grid=FALSE)
p3d$points3d(coast$x,coast$y,rep(0, length(coast$x)), type='l',
col='gray')
# Now how to fill this polygon...?
Cheers,
Jon
Mac OS 10.5
R 2.6.2
Intelligence Finite
Jon Loehrke
Graduate Research Assistant
Department of Fisheries Oceanography
School for Marine Science and Technology
University of Massachusetts
200 Mill Road, Suite 325
Fairhaven, MA 02719
[EMAIL PROTECTED]
508-910-6393
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