Variogram

variogram calculates the isotropic and anisotropic experimental variogram in various dimensions.Syntax: d = variogram(x,y) d = variogram(x,y,'pn','pv',...)The function uses parseargs (objectId=10670) by Malcolm wood as subfunction.Currently, the function calculates all variogram values at one... Platforms: Matlab

Program to calculate the variogram of any file .dat or .txt Platforms: Matlab

% example: load 'cluster.dat' x = cluster(:,1); y = cluster(:,2); z = cluster(:,3); [length(z) mean(z) var(z)] variogram(x,y,z,0) Platforms: Matlab

variogramfit performs a least squares fit of various theoretical variograms to an experimental, isotropic variogram. The user can choose between various bounded (e.g. spherical) and unbounded (e.g. exponential) models. A nugget variance can be modelled as well, but higher nested models are not... Platforms: Matlab

This function completes what I have started with the functions variogram and variogramfit. It is not intended to be a highly optimized code for performing kriging but may have educational value. Note that for using kriging, you should download the latest version of variogramfit.kriging uses... Platforms: Matlab

Due to participation from research centre CERENA in the international desertwatch project (homepage software needed to be made to handle the extensive databases necessary to this project successfull completion. ECMWF Parser was one such case and by now the most compreheensive tool built for... Platforms: Windows

Kriging and inverse distance are popular interpolation methods, especially in earth sciences. There are some routines already available on matlab but are severely limited by matlabs memory constraints. By using gstat to handle interpolation and variogram modelling, very large datasets are easily... Platforms: Matlab

The script generates spatial data with a scale-invariant power spectrum (1/f noise) and a normal error distribution.The spectral density of the data is proportional to f^BETA, where f is the frequency and BETA is the spectral exponent (BETA=0 is white noise, BETA=-2 is Brown noise).To generate... Platforms: Matlab