Abstract

GIRALDO, RAMÓN; MATEU, JORGE  and  DELICADO, PEDRO. geofd: An R Package for Function-Valued Geostatistical Prediction. Rev.Colomb.Estad. [online]. 2012, vol.35, n.3, pp.385-407. ISSN 0120-1751.

Spatially correlated curves are present in a wide range of applied disciplines. In this paper we describe the R package geofd which implements ordinary kriging prediction for this type of data. Initially the curves are pre-processed by fitting a Fourier or B-splines basis functions. After that the spatial dependence among curves is estimated by means of the trace-variogram function. Finally the parameters for performing prediction by ordinary kriging at unsampled locations are by estimated solving a linear system based estimated trace-variogram. We illustrate the software analyzing real and simulated data.

Keywords : Functional data; Smoothing; Spatial data; Variogram.

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