Column Semi-variogram

For distance values (h) in a distance column, the Column Semi-variogram operation calculates semi-variogram values (g) according to a semi-variogram model and its parameters as specified by the user. The calculated semi-variogram values are stored in an output column. The aim of storing modelled semi-variogram values in a column is for instance to be able to assess the 'Goodness of Fit (R²)' between modelled semi-variogram values and experimental semi-variogram values.

This operation is generally used on the output table of Spatial Correlation and presumably after you have fit some semi-variogram models through the experimental semi-variogram values in a graph window.