prefpls {SensoMineR} | R Documentation |
This function is useful to interpret the usual graphs $(x,y)$ with additional quantitative variables.
prefpls(donnee, var1 = 1, var2 = 2, firstvar = 3, lastvar = ncol(donnee), levels = c(0.2,0.4,0.6,0.7,0.8,0.9,1), asp = 1, nbchar = max(nchar(colnames(donnee))))
donnee |
a data frame made up of quantitative variables |
var1 |
the position of the variable corresponding to the x-axis |
var2 |
the position of the variable corresponding to the y-axis |
firstvar |
the position of the first endogenous variable |
lastvar |
the position of the last endogenous variable (by default the last column of donnee ) |
levels |
a list of the levels displayed in the graph of variables |
asp |
aspect ratio for the graph of the individuals |
nbchar |
the number of characters used for the labels of the variables |
This function is very useful when there is a strong correlation between two variables x and y
A scatter plot of the invividuals
A graph with additional variables and the quality of representation contour lines.
François Husson
Husson, F. & Pagès, J. (2005). Scatter plot and additional variables. Journal of applied statistics
data(chocolates) resaverage <- averagetable(sensochoc, formul = "~Product", firstvar = 5) prefpls(resaverage)