rows.corr: Chart of rows correlation with a selected dimension

In gianmarcoalberti/CAinterprTools: Package for graphical aid in Correspondence Analysis interpretation and significance testing

Description

This function allows to calculate the correlation (sqrt(COS2)) of the row categories with the selected dimension.

The function displays the correlation of the row categories with the selected dimension; the parameter sort=TRUE arrange the categories in decreasing order of correlation. At the left-hand side, the categories' labels show a symbol (+ or -) according to which side of the selected dimension they are correlated, either positive or negative. The categories are grouped into two groups: categories correlated with the positive ('pole +') or negative ('pole -') pole of the selected dimension. At the right-hand side, a legend (which is enabled/disabled using the 'leg' parameter) indicates the column categories' contribution (in permills) to the selected dimension (value enclosed within round brackets), and a symbol (+ or -) indicating whether they are actually contributing to the definition of the positive or negative side of the dimension, respectively. Further, an asterisk (*) flags the categories which can be considered major contributors to the definition of the dimension.

Usage

rows.corr(data, x = 1, sort = TRUE, filter = FALSE, leg = TRUE,
  dotprightm = 5, cex.leg = 0.6, cex.labls = 0.75, leg.x.spc = 1,
  leg.y.spc = 1)

Arguments

data:	name of the dataset (must be in dataframe format).
x:	dimension for which the row categories correlation is returned (1st dimension by default).
sort:	logical value (TRUE/FALSE) which allows to sort the categories in descending order of correlation with the selected dimension. TRUE is set by default.
filter:	filter the column categories listed in the top-right legend, only showing those who have a major contribution to the definition of the selected dimension.
leg:	enable (TRUE; default) or disable (FALSE) the legend at the right-hand side of the dotplot.
dotprightm:	increases the empty space between the right margin of the dotplot and the left margin of the legend box.
cex.leg:	adjust the size of the legend's characters.
cex.labls:	adjust the size of the dotplot's labels.
leg.x.spc:	adjust the horizontal space of the chart's legend. See more info from the 'legend' function's help (?legend).
leg.y.spc:	adjust the y interspace of the chart's legend. See more info from the 'legend' function's help (?legend).

Examples

data(greenacre_data)
rows.corr(greenacre_data, 1, sort=TRUE) #Plots the correlation of the row categories with the 1st CA dimension.

gianmarcoalberti/CAinterprTools documentation built on May 17, 2019, 4:18 a.m.