plot.treemox.pls: Comparative plot between nodes from a PATHMOX or TECHMOX tree

In gastonstat/pathmox: Pathmox Approach of Segmentation Trees in Partial Least Squares Path Modeling

Description

Plot method for objects of class "treemox.pls". Barplots of path coefficients of terminal nodes with respect to those of the global (root) model

Usage

  ## S3 method for class 'treemox.pls'
 plot(x, comp.by = "nodes",
    nodes.names = NULL, ordered = TRUE, decreasing = FALSE,
    color = NULL, show.box = TRUE, border = NA,
    cex.names = 0.75, cex.axis = 0.75, short.labs = TRUE,
    short.min = NULL, ...)

Arguments

x	An object of class "treemox.pls" returned by treemox.pls.
comp.by	One of "nodes" or "latents". This argument indicates the type of barplots comparison.
nodes.names	Optional vector of names for the terminal nodes (must be a vector of length equal to the number of terminal nodes).
ordered	A logical value indicating whether the barplots are shown in increasing ordered.
decreasing	A logical value indicating if the sort order should be increasing or decreasing.
color	Optional vector of colors for the bars. When color=NULL rainbow colors are used.
show.box	A logical value indicating whether a box is drawn around each barplot.
border	The color to be used for the border of the bars. Use border=NA to omit borders.
cex.names	Expansion factor for axis names (bar labels).
cex.axis	Expansion factor for numeric axis labels.
short.labs	Logical value indicating if the labels of the barplots should be abbreviated (TRUE by default).
short.min	Integer number indicating the minimum length of the abbreviations for the labels. Only used when short.labs=TRUE.
...	Arguments to be passed to/from other methods.

Details

This function aims to visualize the comparison between path coefficients of the terminal nodes against the path coefficients of the global model in the root node.
When comp.by="nodes" a graphic window is displayed for each endogenous latent variable of the PLS model, and barplots of nodes are shown.
When comp.by="latents" a graphic window is displayed for each endogenous relationship of the PLS model, and barplots of independent latent variables are shown.

See Also

treemox.pls, pathmox, techmox

Examples

## Not run: 
 ## example of PLS-PM in customer satisfaction analysis
 ## model with seven LVs and reflective indicators
 data(csimobile)

 # select manifest variables
 data_mobile = csimobile[,8:33]

 # define path matrix (inner model)
 IMAG = c(0, 0, 0, 0, 0, 0, 0)
 EXPE = c(1, 0, 0, 0, 0, 0, 0)
 QUAL = c(0, 1, 0, 0, 0, 0, 0)
 VAL = c(0, 1, 1, 0, 0, 0, 0)
 SAT = c(1, 1, 1, 1, 0, 0, 0)
 COM = c(0, 0, 0, 0, 1, 0, 0)
 LOY = c(1, 0, 0, 0, 1, 1, 0)
 mob_path = rbind(IMAG, EXPE, QUAL, VAL, SAT, COM, LOY)

 # blocks of indicators (outer model)
 mob_blocks = list(1:5, 6:9, 10:15, 16:18, 19:21, 22:24, 25:26)
 mob_modes = rep("A", 7)

 # apply plspm
 mob_pls = plspm(data_mobile, mob_path, mob_blocks, modes = mob_modes,
                 scheme = "factor", scaled = FALSE)

 # re-ordering those segmentation variables with ordinal scale (Age and Education)
 csimobile$Education = factor(csimobile$Education,
     levels=c("basic","highschool","university"),
     ordered=TRUE)

 # select the segmentation variables
 seg_vars = csimobile[,1:7]

 # Pathmox Analysis
 mob_pathmox = pathmox(mob_pls, seg_vars, signif=.10, size=.10, deep=2)

 # applying function treemox.pls
 mob_nodes <- treemox.pls(mob_pls, mob_pathmox)

 # default plot
 # comparative barplots of endogenous latent variables between nodes
 plot(mob_nodes, comp.by="nodes")

 # comparative barplots of nodes between latent regressors
 plot(mob_nodes, comp.by="latents", decreasing=TRUE)
 
## End(Not run)

gastonstat/pathmox documentation built on May 16, 2019, 5:46 p.m.