plot.intsvy.reg {intsvy}

Graphical representation of regression models in groups

Description

Functions pisa.reg, pisa.reg.pv, piaac.reg and piaac.reg.pv produce object of the class intsvy.reg. The function plot.intsvy.reg presents this list of regression models graphically.

Usage

## S3 method for class 'intsvy.reg'
plot(x, ..., vars, se = TRUE, sort = FALSE)

Arguments

x

An object of the class intsvy.reg returned by pisa.reg, pisa.reg.pv, piaac.reg and piaac.reg.pv functions.

...

Other arguments

vars

Variable labels of coefficients to be plotted. If none selected all coefficients are plotted including the R-squared

se

If TRUE add whiskers for standard errors.

sort

If TRUE groups are sorted in alphabetical order.

Value

Returns object of ggplot class with barplot. As with other ggplot objects the plus sign "+" can be used outside this function to modify graph parameters of the returning ggplot object. Works for one way, two-way and three-way contingency tables.

See Also

plot.intsvy.table, plot.intsvy.mean

Examples

## Not run: 
# Independent variables
x.vars <- c("ESCS", "COGACT", "TCHBEHTD", "TCHBEHSO")
# Model estimation
my.mod <- pisa.reg.pv(pvlabel="MATH", x=x.vars, by="IDCNTRYL", data=pisa12)
# Plot
plot(gen.mod, vars = c("COGACT", "TCHBEHTD", "TCHBEHSO"), sort=TRUE)

## End(Not run)