Experiments In Migration Mapping By Computer

@inproceedings{Tobler1987ExperimentsIM,
  title={Experiments In Migration Mapping By Computer},
  author={Waldo Tobler},
  year={1987}
}
Migration maps represent patterns of geographical movement by arrows or bands between places, using information arriving in “from-to” tables. In the most interesting cases the tables are of large size, suggesting that computer assistance would be useful in the preparation of the maps. A computer program prepared for this purpose shows that graphical representation is feasible for tables as large as fifty by fifty, and possibly larger. The program contains options for alternate forms of movement… 

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