Model Variogram Initial Values

Use this to specify initial values for model parameters when fitting models to variograms. The parameters listed will depend on the form of the variogram (isotropic or anisotropic) and the selected model. If any of the fields are left blank then the initial values will be determined automatically.

Isotropic model

For the spherical, pentaspherical, exponential, Gaussian, stable, circular, cubic, besselk1, cardinal sine and bounded linear models:

Range

Specifies an initial value for the distance or range parameter.

For the double-spherical:

Range 1	Specifies an initial value for the first distance or range parameter.
Range 2	Specifies an initial value for the second distance or range parameter.

Geometrical anisotropic model

For the spherical, pentaspherical, exponential, Gaussian, stable, circular and cubic models:

Phi	Specifies an initial value for the angle in radians of the direction of maximum variation.
Maximum range	Specifies an initial value for the maximum distance or range parameter.
Minimum range	Specifies an initial value for the minimum distance or range parameter.

For the power model:

Phi	Specifies an initial value for the angle in radians of the direction of maximum variation.
Maximum gradient	Specifies an initial value for the maximum gradient.
Minimum gradient	Specifies an initial value for the minimum gradient.

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Model Variogram Initial Values

Isotropic model

Geometrical anisotropic model

Action Icons

See also

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