View source: R/XYcoords2LinesColumns.R
XYcoords2LinesColumns | R Documentation |
XYcoords2LinesColumns(X,Y) Converts points given as x(i),y(i) coordinates to integer coordinates Columns(i),Lines(i)
X |
[1:n] first coordinate: x(i), y(i) is the i-th point on a plane |
Y |
[1:n] second coordinate: x(i), y(i) is the i-th point on a plane |
minNeurons |
minimal size of the corresponding grid i.e max(Lines)*max(Columns)>=MinGridSize , default MinGridSize = 4096 defined by the numer of neurons |
MaxDifferentPoints |
TRUE: the discretization error is minimal FALSE: number of Lines and Columns is minimal |
PlotIt |
Plots the result |
Details are written down in [Thrun, 2018, p. 47].
GridConvertedPoints[1:Columns,1:Lines,2] IntegerPositions on a grid corresponding to x,y
Michael Thrun
[Thrun, 2018] Thrun, M. C.: Projection Based Clustering through Self-Organization and Swarm Intelligence, doctoral dissertation 2017, Springer, Heidelberg, ISBN: 978-3-658-20539-3, doi: 10.1007/978-3-658-20540-9, 2018.
data("Chainlink") Data=Chainlink$Data InputDistances=as.matrix(dist(Data)) res=cmdscale(d=InputDistances, k = 2, eig = TRUE, add = FALSE, x.ret = FALSE) ProjectedPoints=as.matrix(res$points) GridConvertedPoints=XYcoords2LinesColumns(ProjectedPoints[,1],ProjectedPoints[,2],PlotIt=FALSE)
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