1. a Avenida dos Astronautas, National Institute for Space Research (INPE) , 1758 – 12227‐010, São José dos Campos, São Paulo, Brazil
2. b Federal University of Minas Gerais (UFMG), Avenida Antônio Carlos, Department of Cartography , 6627 – 31270‐900, Belo Horizonte, Minas Gerais, Brazil
3. c Avenida Brasil, Intelligenesis do Brasil Ltda , 1438‐1505, 30140‐003, Belo Horizonte, Minas Gerais, Brazil
4. d University College London, Centre for Advanced Spatial Analysis , 1‐19 Torrington Place, London WC1E 6BT, UK