plotData3D: Plot dqta in 3 dimensions
In Albluca/rpgraph: r interface to VDAOEngine to build elastic principal graphs

Plot dqta in 3 dimensions

plotData3D(Data, PrintGraph, GroupsLab, ScaleFunction = sqrt,
  NodeSizeMult = 1, Col = NULL, CirCol = "black", LineCol = "black",
  IdCol = "blue", Main = "", Cex.Main = 0.7, PlotProjections = FALSE,
  ProjectionLines = NULL, TaxonList = NULL, OnEdgeProjections = NULL,
  Xlab = "PC1", Ylab = "PC2", Zlab = "PC3", DirectionMat = NULL,
  Thr = 0.05, Plot.ly = FALSE)

`Data`	The Data to be plotted. Each column represents a dimension and each row represents a point
`PrintGraph`	A princial graph structure obtained by computeElasticPrincipalGraph
`GroupsLab`	A vector of labels to indicate which group each point belongs to
`ScaleFunction`	A scaling function to decide the size of the spheres that represent the nodes of the principal graph
`NodeSizeMult`	A scaling vector to decide the size of the spheres that represent the nodes of the principal graph
`Col`	A vector of colors for the points. If NULL the cplors will be computed automatically
`CirCol`	The color of the Spheres (it will be partially transparent)
`LineCol`	The colors of the edtges of the graph
`IdCol`	The color of the labels of the nodes of the graph
`Main`	The title of the plot
`Cex.Main`	The multiplier associated with the title of the plot
`PlotProjections`	Should the line projecting points on the nodes to be plotted?
`ProjectionLines`	A vector of colors for the projection lines (used only if Plot.ly = FALSE)
`TaxonList`	A list of associations between points and nodes produced by getTaxonMap
`Xlab`	The label of the x axis
`Ylab`	The label of the y axis
`Zlab`	The label of the z axis
`DirectionMat`	A directionality structure produced by CheckDirectionality
`Thr`	A threshold to be used for directionality reconstruction
`Plot.ly`	A boolen indicating if Plot.ly (TRUE) or rgl (FALSE) should be used