dot distribution maps

[Richard Worth]

Hi all,
I was wondering what software people use to make all those really  
clean dot-distribution maps I see in publications (e.g. the MONA  
series)?  It looks like you can select exactly the geographic region  
of interest anywhere in the world on the base map and then apply the  
data. Looks like you can also choose political boundaries, rivers,  
etc. How is the data applied? Does the software exist for Mac OS  We  
have GIS capability here but it takes a long time to become  
proficient and many of the map layers are not needed.
TIA for any help and best regards,  Richard

Richard Worth
Entomologist / Lepidopterist
Plant Division
Oregon Dept. of Agriculture
635 Capitol St. NE
Salem, OR  97301
503-986-6461
503-871-7108: cell
rworth at oda.state.or.us
http://www.oregon.gov/ODA/index.shtml


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