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MRIaggr (version 1.1.5)

calcContro_cpp: Compute contralateral normalization

Description

C++ function called by calcContralateral to seek the contralateral voxel and the contralateral values. For internal use.

Usage

calcContro_cpp(contrast, coords_px, index_k, index_k_contro, d_lim, lambda, param_ref, var_ref, type_moy, type_med, type_NN, verbose)

Arguments

contrast
the contrast value of each voxel on a given slice. matrix.
coords_px
the coordinates of the observations. matrix.
index_k
the index of the observations on the hemisphere of interest. integer vector.
index_k_contro
the index of the observations on the contralateral hemisphere. integer vector.
d_lim
the distance within which the contralateral values are considered. numeric.
lambda
the importance of the penalization by the distance. numeric.
param_ref
the parameter to be used as a reference to identify the contralateral voxel. character.
var_ref
the variance of the reference parameter. numeric.
type_moy
should the mean contralateral value be used ? logical.
type_med
should the median contralateral value be used ? logical.
type_NN
should the closest contralateral voxel according to the reference parameter be used ? logical.
verbose
should the execution of the function be traced ? logical.