determineStartRect: Calculate starting values for an ARF model

Description Usage Arguments Details Value Author(s) See Also

View source: R/fitModelFunctions.R

Description

determineStartRect calculates starting values for an ARF model by searching for maxima and minima in the data, and estimating the width of these maxima/minima.

Usage

1
2
determineStartRect(arfmodel, options = loadOptions(arfmodel))
determineStartRectSimple(arfmodel, options = loadOptions(arfmodel))

Arguments

arfmodel

An ARF model object (class model)

options

An "options" object (class options), by default the options.Rda from the current model is loaded. The value of [email protected] determines the calculation of the spatial extent values, higher settings will lead to greater extent values.

Details

determineStartRect determines the maxima and minima of the data and at each maximum/minimum searches in each dimension (x,y,z) the point where the maximum/minimum value is half its original value. This creates a box around the maximum/minimum, which is set to zero, to avoid searching the same area twice. The widths of this box are taken as starting values for the width-parameters.

Value

Returns the ARF "model" object, with the starting values in the @startval slot.

Author(s)

Wouter D. Weeda - [email protected]

See Also

model, options


arf3DS4 documentation built on May 29, 2017, 9:53 p.m.