1. TDLM::coords
    Geographical coordinates of US Kansas counties' centroids in 2000 (Longitude/Latitude)
  2. TDLM::coords_xy
    Geographical coordinates of US Kansas counties' centroids in 2000 (X/Y based on Web Mercator)
  3. TDLM::county
    Spatial distribution of US Kansas counties in 2000
  4. TDLM::distance
    Great-circle distances between US Kansas counties
    matrix|105 x 105
  5. TDLM::mass
    Population and number of out- and in-commuters by US Kansas county in 2000
  6. TDLM::od
    Origin-Destination commuting matrix between US Kansas counties in 2000
    matrix|105 x 105