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Fig. 12.27 Artificial series of 256 values satisfying model of de Wijs with overall mean set equal
to 1 and index of dispersion d ΒΌ 0.4 (Source: Agterberg 2012b , Fig. 4)
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Fig. 12.28 Logarithmically transformed values of Fig. 12.27 after addition of random normal
numbers with zero mean and standard deviation equal to 0.25. The purpose of this experiment is to
create an artificial series that has two components of which the only first one (Fig. 12.27 ) has
autocorrelated values (Source: Agterberg 2012b , Fig. 5)
The estimated singularities should provide approximately error-free estimates of
the logarithmically transformed input values. Standard deviations of differences
between logarithmically transformed simulated element concentration values and
estimated singularities on the regression lines shown in Figs. 12.30 , 12.31 , and
 
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