Program, and R package, for uni- or multivariable geostatistical modelling, prediction and simulation.
FUNCTIONS
+ variogram, cross variogram, covariogram or cross covariogram calculation; + modeling of nested models, interactively or non-interactively + pooled (within-class) variogram estimation + variogram maps
+ ordinary kriging, simple kriging, multivariable universal kriging with arbitrary base functions + kriging with external drift + reading observations, prediction locations, and base function values for universal kriging or category numbers for stratified kriging + stratified universal kriging + conditional and unconditional Gaussian simulation + Indicator simulation for simple, categorical or cumulative indicators + block predictions for rectangular blocks or arbitrarily shaped blocks + Gaussian simulation of block averages conditioned on point observations
+ concise, intuitive command language that allows batch processing and eases documentation + Map formats supported are PCRaster, Idrisi, Arc-Info/ArcView+SpatialAnalyst (gridascii and gridfloat), Grass, ER-Mapper, GMT, and SURFER . + writing maps with predictions, simulated values, error variances and error covariances + optionally ascii input and output (independence from GIS formats)
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CODES
C codes are available from https://svn.52north.org/svn/geostatistics/, R version available from CRAN windows binary for gstat stand-alone with support for csf gd (png) (gif) grass gdal gsl pdcurses and netcdf: see link below
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CODES
C codes are available from https://svn.52north.org/svn/geostatistics/, R version available from CRAN windows binary for gstat stand-alone with support for csf gd (png) (gif) grass gdal gsl pdcurses and netcdf: see link below
TIP
Graphical user interface for Gstat have been developed: one within the PCRaster project, the other one for IDRISI. The authors of GRASS also adopted Gstat as their geostatistical add-on module.
Gstat has two mailing lists: one for announcements, and one for questions and discussions.
Reference: Edzer J. Pebesma and Cees G. Wesseling, 1998, Gstat: a program for geostatistical modelling, prediction and simulation. Computers & Geosciences Vol. 24, No. 1, pp. 17-31
Pebesma, E.J., 2004. Multivariable geostatistics in S: the gstat package. Computers & Geosciences, 30: 683-691.