qqnorm.saeTrafo {saeTrafo}

Quantile-quantile plots for an saeTrafo object

Description

Normal quantile-quantile plots of the underlying model (see NER_Trafo) are obtained. The plots are obtained by ggplot.

Usage

## S3 method for class 'saeTrafo'
qqnorm(y, color = c("blue", "lightblue3"), gg_theme = NULL, ...)

Arguments

y

a model object of type "saeTrafo" (see NER_Trafo).

color

a character vector with two elements. The first element defines the color for the line in the Q-Q plots, for the Cook's Distance plot and for the Box-Cox plot. The second element defines the color for the densities.

gg_theme

theme list from package ggplot2. For using this argument, package ggplot2 must be loaded via library(ggplot2). See also Example 2.

...

optional arguments passed to generic function.

Value

Two Q-Q plots in one grid obtained by ggplot.

See Also

saeTrafoObject, NER_Trafo

Examples

# Examples for Quantile-quantile plots

# Load Data
data("eusilcA_smp")
data("pop_area_size")
data("pop_mean")
data("pop_cov")

# Nested error regression model
NER_model <- NER_Trafo(fixed = eqIncome ~ gender + eqsize + cash +
                       self_empl + unempl_ben + age_ben + surv_ben +
                       sick_ben + dis_ben + rent + fam_allow + house_allow +
                       cap_inv + tax_adj,
                       smp_domains = "district",
                       pop_area_size = pop_area_size,
                       pop_mean = pop_mean, pop_cov = pop_cov,
                       smp_data = eusilcA_smp)

# Example 1: Default Quantile-quantile plots
qqnorm(NER_model)

# Example 2: Personalized plot using theme
require("ggplot2")
library(ggplot2)
qqnorm(NER_model,
       color = c("red", "darkgreen"),
       gg_theme = theme(panel.background = element_rect(fill = NA),
                        panel.grid.major = element_line(colour = "grey50"),
                        panel.ontop = TRUE)
)