g.princals

It´s R-script to improve aesthetic plotting of princals function of Gifi package

Contents

• Proposal
• Instruction
• R code
• Output
• Reference

Proposal

g.princals is a function designed to address aesthetic issues encountered when using plot.princals of "Gifi" package(1), which exclusively generates plots using a "graphic" package. g.princals leverages the power of the ggplot2 package, renowned for producing high-quality visuals.this function just produce, transplot, scree plot, loadplot and biplot for hierarchical categoric variables(2).

Instruction

"g.princals" replaces the default "plot" function in R, generating customized graphics for customer items.

• x: call a object was generated by princals(dataset).
• plot.dim: Vector with dimensions to be plotted with the default condition being set to c(1, 2).
• var.subset: with the default condition being set to"all"
• max.plot.array: with the default condition being set to 2.
• stepvec: Vector whether step function should be plotted (see details in princals/R Documentation).with the default condition being set to NA.
• col.lines: colour of line. Default condition being set to "black".
• main: Title of picture. Default condition being set to name of princals object.
• show: Options to choose are TRUE,FALSE,T,F,1 and 0. Default condition being set to "1" mean it shows plots.
• save: Options to choose are TRUE,FALSE,T,F,1 and 0. Default condition being set to "1" mean it saves plots.
• name: label or name of princals object. Default condition being set to name of princals object.
• units: unit of width/height in 'mm'
• width: Default condition being set to 250mm.
• height: Default condition being set to 250mm.
• res: resolution of pictures. Default condition being set to 300 pixels.
• dispersion: dispersion of scores of object in loadplot.it is decreased overdispersion or underdispersion. Default condition being set to 3, it means, mean±3*standard deviation.
• point.size.loadplot: it is point size of loadplot. Default condition being set to 1.
• point.alpha.loadplot: it is point alpha(transparency) of loadplot. Default condition being set to 0.1,
• language: choose a English or Spanish like language. Default condition being set English.
• legend.position: Options to choose are none, left, right, bottom, and top. Default condition being set to right. it means legend position is to right.
• legend.group: Options to choose are TRUE,FALSE,T,F,1 and 0. Default condition being set to "1" mean it shows legend.

R code

Finally, it were showed a picture which generated by "g.princals". If the label names are lengthy, it's advisable to shorten them into acronyms.

################################################################################
setwd("~/file")
source("https://github.com/jasb3110/g.princals/blob/f286b26f79da57600c3e7f207a6f653f24028a76/g.princals.R)

library("Gifi")
# ordinal PCA
fitord <- princals(ABC,ndim = 2)## ordinal PCA
g.princals(fitord,save=0,show=1,dispersion =3,legend.group = 0)#show plots
g.princals(fitord,save=0,show=1,dispersion =3,colour.group = c(rep("A",5),rep("B",6)),legend.group = 1,language = "spanish")#show plots

g.princals(fitord,save=1,show=1,dispersion =3,legend.group = 0)#save plots in PNG format
g.princals(fitord,save=1,show=0,dispersion =3,colour.group = c(rep("A",5),rep("B",6)),legend.group = 1,language = "spanish")#save plots in PNG format
################################################################################

Output

In this section, an R script and corresponding plots created using the g.princals function are presented in Spanish, and group of variables.

Picture. Transplots of ABC dataset, just 1 to 4 variables

Picture. Transplots of ABC dataset, just 5 to 8 variables

Picture. Transplots of ABC dataset, just 9 to 11 variables

Picture. Screeplot of ABC dataset

Picture. Loadplot of ABC dataset

Picture. Biplot of ABC dataset

Reference

• https://rdrr.io/rforge/Gifi/src/R/plot.princals.R
• https://github.com/jasb3110/g.princals/blob/0ed7b04adcb1039de5f9cafca0c6315a36a37e09/g.princals.R