eiCompare (version 3.0.0)

lambda_two_compare: Lambda Two Compare

Description

Compares two vectors of lambdas, usually one racial group's support for two separate candidates, or two separate groups' support for the same candidate.

Usage

lambda_two_compare(lmd, cnames, group_name = "Latino", cand1or2 = 1)

Arguments

lmd

data.frame() object returned from md_bayes_draw_lambda()

cnames

Vector of character (column) names, needs to match relevant column names in md_bayes_draw_lambda return.

group_name

Character string for name appearing in posterio plot. Default is "Latino")

cand1or2

Numeric. Either 1 or 2. Default = 1. Which pairing over the other.

Value

Data frame of the probability of one scenario over the other by 10 pct., by 5 pct., greater than 0 (e.g., what is the probability that candidate 1 beats candidate 2 among Latinos by 10 percentage points, etc.)

References

eiPack, King et. al. (http://gking.harvard.edu/eiR)

Examples

# NOT RUN {
# TOY DATA EXAMPLE
# }
# NOT RUN {
canda <- c(10, 8, 10, 4, 8)
candb <- 20 - canda
white <- c(15, 12, 18, 6, 10)
black <- 20 - white
toy <- data.frame(canda, candb, white, black)

# Generate formula for passage to ei.reg.bayes() function
form <- formula(cbind(canda, candb) ~ cbind(black, white))
# Then excute md_bayes_draw(); not run here due to time
# lmd <- md_bayes_draw_lambda(toy, c(2,3), form )
# Function Prep #
# cnames <- c("lambda.black.canda", "lambda.black.candb")

# Canda a over candb among black voters#
# lambda_two_compare(lmd, cnames=cnames, cand1or2 = 1)
# }