char.assign: Points character and color assignation for CircE.Plot

In CircE: Circumplex models Estimation

Description

This function allows to quickly assign different point characters and color to the different variables. It is especially useful in working with raw items whose names are usually composed by a serial number and the name of the main variable to which they refer to.

Usage

char.assign(sc.names,v.names,point.char,bg.point)

Arguments

sc.names	character string containing the names of the variables to be matched in the given character vector v.names. It must contains the patterns that identify the variables belongingness in the variable (or items) names.
v.names	a character vector where matches are sought (e.g. the variables (or items) names).
point.char	points character, i.e., symbol to use for each variable.
bg.point	background (fill) color for the open plot symbols given by pch=21:25.

Details

The pattern matching between the character string given in sc.names and the v.names is based on grep function.

Author(s)

Michele Grassi [e-mail]

Examples

library(CircE)
data(SELF5)
v.names<-names(SELF5)
v.names

RS5<-cor(SELF5,use="pairwise.complete.obs")
RS5<-round(RS5,3)
 ## Not run: 
# The "convergence to a solution" requires more than 200 iterations (e.g., set iterlim=250). 
# This is long-running test made optional for checking. 
Child<-CircE.BFGS(R=RS5,v.names=v.names,m=3,N=286,equal.com=FALSE,equal.ang=FALSE,
                  mcsc="unconstrained",iterlim = 250,factr=1e10)
         
# The features of\code{char.assign} can be effectively highlighted limiting the number 
# of iterations allowed (e.g., set iterlim=5). This option makes the example faster.
Child<-CircE.BFGS(R=RS5,v.names=v.names,m=3,N=286,equal.com=FALSE,equal.ang=FALSE,
                  mcsc="unconstrained",iterlim = 5,factr=1e10)


## End(Not run)
# To simplify the assignation of color and character type of each point on the graph, 
# which are required as arguments by the function CircE.Plot(), 
# in the case of a large number of items, the function char.assign() can be used as follows: 
# Supposing that the items are tagged with a reference to the relative scale (e.g., v.names), 
# it is sufficient to create a string with scale names ('sc.names'),

sc.names=c("LM","NO","PA","BC","DE","FG","HI","JK")

# a vector of the same length containing the point characters ('point.char'), 

point.char=c(21,23,16,17,25,24,8,3)

#  and a vector of colors name for filling-in the points ('bg.point');

bg.point=c("white","gray40","black","black","gray80","gray60","black","black")

# The function char.assign() matches scale names with the item names (the vector 'v.names') 
# and assigns appropriate characters and colors automatically. 
# The result is an R object ('A') which contains two vectors of the same length of variable names 
# that will be passed to CircE.Plot().

A<-char.assign(sc.names=sc.names, v.names=v.names, point.char=point.char, bg.point=bg.point)
A$pchar

A$bg.points

## Not run: 
CircE.Plot(Child,pchar=A$pchar,bg.points=A$bg.points,big.points=60,big.labels=40,
           bg.plot="white",col.text="black",twodim=FALSE,labels=FALSE)

## End(Not run)

char<-data.frame(v.names,A$pchar,A$bg.points)
char[order(A$pchar),]

CircE documentation built on May 30, 2017, 4:14 a.m.