Editorial

María Ester Gonzalez

7-14

Approach to a methodology for evaluating the quality of SDI geoportals

Antonio F. Rodríguez, Paloma Abad, Alejandra Sánchez, Marta Juanatey, Ana Cevidanes

17-42

Usability: a study applied to the Spatial Data Infrastructure of Brazil (VINDE) viewer

Valéria Oliveira Henrique de Araújo, María Ester Gonzalez Campos, Raquel Aparecida Abrahão Costa e Olivei

43-61

Need for a standardized, interoperable and usable catastral portal

María Ester Gonzalez Campos, Rocío Narváez Benalcázar, Miguel Ángel Bernabé Poveda

63-87

SignA, the Spanish IGN Geoportal: exploring the best of SDI and GIS

Hugo Potti Manjavacas, Celia Sevilla Sánchez, Miguel Villalón Esquinas, Jaime Sánchez Fanjul

111-128

The Geoportal for the Columbia Administration of Tierras

Moisés Poyatos Benadero, Ana Alexandra Morales, Andrés Guarín, Lina Victoria Barón, Lorenz Jenni

151-167

Geoportal of the education service in Ecuador: GEOEDUCA

Fernanda León-Pazmiño, Rocío Narváez-Benalcázar

171-177

Culmination of collaboration across borders: Geoportal OTALEX C.

Marcos Soriano, Carmen Caballero, Rafael Álvarez, Teresa Batista, Júlio Mateus, Pedro Vivas

179-184