Hi all,

I'm mapping a Census variable by Census Collector District, which is an area containing about 200 households.  Everything is plotting correctly, except for a small number of Collector Districts which have white fill colour instead of the correct colour for the value of the Census variable.  These aberrant Collector Districts are all "do-nut" Districts, i.e. a polygon with a hole.  They usually represent the hinterland of a small village.

Can anyone provide any suggestions as how to remedy this?

Files that might help in the diagnosis of the problem:

Map showing the white filled "do-nut" Collector Districts  -  http://users.tpg.com.au/limnodyn/holeswhitefill.pdf  (860k)
<http://users.tpg.com.au/limnodyn/holeswhitefill.pdf>
Map with just four poygons, one of which has a hole   -  http://users.tpg.com.au/limnodyn/smallexample.pdf  (213k)
<http://users.tpg.com.au/limnodyn/smallexample.pdf>This map is the bottom right corner of the larger map, and the white Collector District with the hole has a value of the Census variable of 0.577, so it should be plotting as a blue-green colour.

Output of str() for the four polygon example  - http://users.tpg.com.au/limnodyn/str_output.txt  (4k)
Plot command used to produce maps  -  http://users.tpg.com.au/limnodyn/plot.txt  (4k)

Thanks in advance for any suggestions.

Ian Reeve
Institute for Rural Futures
University of New England
Armidale, NSW 2351


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