Artículos de revistas
COMPARISON MEASURES OF MAPS GENERATED BY GEOSTATISTICAL METHODS
Fecha
2012Registro en:
ENGENHARIA AGRICOLA, JABOTICABAL, v. 32, n. 1, supl. 18, Part 2, pp. 174-183, JAN-FEB, 2012
1809-4430
10.1590/S0100-69162012000100018
Autor
Dalposso, Gustavo H.
Uribe-Opazo, Miguel A.
Mercante, Erivelto
Johann, Jerry A.
Borssoi, Joelmir A.
Institución
Resumen
This study uses several measures derived from the error matrix for comparing two thematic maps generated with the same sample set. The reference map was generated with all the sample elements and the map set as the model was generated without the two points detected as influential by the analysis of local influence diagnostics. The data analyzed refer to the wheat productivity in an agricultural area of 13.55 ha considering a sampling grid of 50 x 50 m comprising 50 georeferenced sample elements. The comparison measures derived from the error matrix indicated that despite some similarity on the maps, they are different. The difference between the estimated production by the reference map and the actual production was of 350 kilograms. The same difference calculated with the mode map was of 50 kilograms, indicating that the study of influential points is of fundamental importance to obtain a more reliable estimative and use of measures obtained from the error matrix is a good option to make comparisons between thematic maps.