lambda_two_compare: Lambda Two Compare

In eiCompare: Compares Different Ecological Inference Methods

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.)

Author(s)

Loren Collingwood <[e-mail]>; Justin Gross <[e-mail]>

References

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

Examples

# TOY DATA EXAMPLE

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)

eiCompare documentation built on Aug. 31, 2023, 5:16 p.m.