CalcUstarmatrix         Calculate the U*matrix for a given Umatrix and
                        Pmatrix.
Chainlink               Chainlink is part of the Fundamental Clustering
                        Problem Suit (FCPS) [Thrun/Ultsch, 2020].
DefaultColorSequence    Default color sequence for plots
Delta3DWeightsC         intern function
EsomNeuronsAsList       Converts wts data (EsomNeurons) into the list
                        form
ExtendToroidalUmatrix   Extend Toroidal Umatrix
GeneralizedUmatrix      Generalized U-Matrix for Projection Methods
                        published in [Thrun/Ultsch, 2020]
GeneralizedUmatrix-package
                        Credible Visualization for Two-Dimensional
                        Projections of Data
GeneratePmatrix         Generates the P-matrix
ListAsEsomNeurons       Converts List to WTS
LowLand                 LowLand
NormalizeUmatrix        Normalize Umatrix
ReduceToLowLand         ReduceToLowLand
TopviewTopographicMap   Top view of the topographic map in 2D
Uheights4Data           Uheights4Data
UmatrixColormap         U-Matrix colors
UniqueBestMatchingUnits
                        UniqueBestMatchingUnits
XYcoords2LinesColumns   XYcoords2LinesColumns(X,Y) Converts points
                        given as x(i),y(i) coordinates to integer
                        coordinates Columns(i),Lines(i)
addRowWiseC             intern function
plotTopographicMap      Visualizes the generalized U-matrix in 3D
sESOM4BMUs              simplified ESOM
setdiffMatrix           setdiffMatrix shortens Matrix2Curt by those
                        rows that are in both matrices.
trainstepC              internal function for s-esom
trainstepC2             internal function for s-esom
upscaleUmatrix          Upscale a Umatrix grid
