letter_plot: Dot Plot with Letter Display

In psre: Presenting Statistical Results Effectively

Dot Plot with Letter Display

Description

Produces an dot plot with error bars along with a compact letter display

Usage

letter_plot(fits, letters)

Arguments

fits	Output from ggpredict from the ggeffects
letters	A matrix of character strings giving the letters from a compact letter display. This is most often from a call to cld from the multcomp package.

Value

A ggplot.

Examples

library(psre)
library(ggeffects)
library(multcomp)
library(dplyr)
library(ggplot2)
data(wvs)
wvs$civ <- with(wvs, case_when(
    civ == 4 ~ "Islamic", 
    civ == 6 ~ "Latin American", 
    civ == 7 ~ "Orthodox", 
    civ == 8 ~ "Sinic", 
    civ == 9 ~ "Western", 
    TRUE ~ "Other"))
wvs$civ = factor(wvs$civ, levels=c("Western", 
                                   "Sinic", 
                                   "Islamic", 
                                   "Latin American", 
                                   "Orthodox", 
                                   "Other"))

mod <- lm(resemaval ~ civ + gdp_cap + 
            pct_secondary + pct_univ_degree + 
            pct_high_rel_imp, data=wvs)

eff <- ggpredict(mod, 
                            "civ", 
                            ci.lvl = .95)

pwc <- summary(glht(mod, linfct=mcp(civ = "Tukey")), 
               test=adjusted(type="none"))
cld1 <- cld(pwc)
lmat <- cld1$mcletters$LetterMatrix
eff$x <- reorder(eff$x, eff$predicted, mean)
letter_plot(eff, lmat) + 
  labs(x="Predicted Emancipative Values\n(95% Confidence Interval)")

psre documentation built on Aug. 8, 2022, 5:05 p.m.