% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/polca-tidiers.R
\name{tidy.poLCA}
\alias{tidy.poLCA}
\alias{poLCA_tidiers}
\title{Tidy a(n) poLCA object}
\usage{
\method{tidy}{poLCA}(x, ...)
}
\arguments{
\item{x}{A \code{poLCA} object returned from \code{\link[poLCA:poLCA]{poLCA::poLCA()}}.}

\item{...}{Additional arguments. Not used. Needed to match generic
signature only. \strong{Cautionary note:} Misspelled arguments will be
absorbed in \code{...}, where they will be ignored. If the misspelled
argument has a default value, the default value will be used.
For example, if you pass \code{conf.lvel = 0.9}, all computation will
proceed using \code{conf.level = 0.95}. Additionally, if you pass
\code{newdata = my_tibble} to an \code{\link[=augment]{augment()}} method that does not
accept a \code{newdata} argument, it will use the default value for
the \code{data} argument.}
}
\value{
A \link[tibble:tibble]{tibble::tibble} with one row per variable-class-outcome
combination, with columns:

\item{variable}{Manifest variable}
\item{class}{Latent class ID, an integer}
\item{outcome}{Outcome of manifest variable}
\item{estimate}{Estimated class-conditional response probability}
\item{std.error}{Standard error of estimated probability}
}
\description{
Tidy summarizes information about the components of a model.
A model component might be a single term in a regression, a single
hypothesis, a cluster, or a class. Exactly what tidy considers to be a
model component varies cross models but is usually self-evident.
If a model has several distinct types of components, you will need to
specify which components to return.
}
\examples{

if (require("poLCA", quietly = TRUE)) {
  library(poLCA)
  library(dplyr)

  data(values)
  f <- cbind(A, B, C, D)~1
  M1 <- poLCA(f, values, nclass = 2, verbose = FALSE)

  M1
  tidy(M1)
  augment(M1)
  glance(M1)

  library(ggplot2)

  ggplot(tidy(M1), aes(factor(class), estimate, fill = factor(outcome))) +
    geom_bar(stat = "identity", width = 1) +
    facet_wrap(~ variable)

  set.seed(2016)
  # compare multiple
  mods <- tibble(nclass = 1:3) \%>\%
    group_by(nclass) \%>\%
    do(mod = poLCA(f, values, nclass = .$nclass, verbose = FALSE))

  # compare log-likelihood and/or AIC, BIC
  mods \%>\%
    glance(mod)

  ## Three-class model with a single covariate.

  data(election)
  f2a <- cbind(MORALG,CARESG,KNOWG,LEADG,DISHONG,INTELG,
               MORALB,CARESB,KNOWB,LEADB,DISHONB,INTELB)~PARTY
  nes2a <- poLCA(f2a, election, nclass = 3, nrep = 5, verbose = FALSE)

  td <- tidy(nes2a)
  td

  # show

  ggplot(td, aes(outcome, estimate, color = factor(class), group = class)) +
    geom_line() +
    facet_wrap(~ variable, nrow = 2) +
    theme(axis.text.x = element_text(angle = 90, hjust = 1))

  au <- augment(nes2a)
  au
  au \%>\%
    count(.class)

  # if the original data is provided, it leads to NAs in new columns
  # for rows that weren't predicted
  au2 <- augment(nes2a, data = election)
  au2
  dim(au2)
}

}
\seealso{
\code{\link[=tidy]{tidy()}}, \code{\link[poLCA:poLCA]{poLCA::poLCA()}}

Other poLCA tidiers: 
\code{\link{augment.poLCA}()},
\code{\link{glance.poLCA}()}
}
\concept{poLCA tidiers}
