View source: R/ExtendToroidalUmatrix.R

ExtendToroidalUmatrix | R Documentation |

Extends Umatrix by toroidal continuation of the given Umatrix defined by
`ExtendBorders`

in all four directions.

ExtendToroidalUmatrix(Umatrix, Bestmatches, ExtendBorders)

`Umatrix` |
[1:Lines,1:Columns] Matrix of Umatrix Heights |

`Bestmatches` |
[1:n, 1:2] Matrix with positions of Bestmatches for n
datapoints, first columns is the position in |

`ExtendBorders` |
number of lines and columns the umatrix should be extended with |

Function assumes that U-matrix is not planaer (has no borders), i.e. is toroidal, and not tiled. Bestmatches are moved to new positions accordingly. Example is shown in conference talk of [Thrun et al., 2020].

`Umatrix` |
[1:Lines+2*ExtendBorders,1:Columns+2*ExtendBorders] Matrix of U-Heights |

`Bestmatches` |
Array with positions of Bestmatches |

Currently can be only used if untiled U-Matrix (the default) is presented, but 4-tiled U-matrix does not work.

Michael Thrun

[Thrun et al., 2020] Thrun, M. C., Pape, F., & Ultsch, A.: Interactive Machine Learning Tool for Clustering in Visual Analytics, 7th IEEE International Conference on Data Science and Advanced Analytics (DSAA 2020), Vol. accepted, pp. 1-9, IEEE, Sydney, Australia, 2020.

#ToDO

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