# Bayesian IRT Ideal Point Models with 'Stan'

## Documentation for package ‘idealstan’ version 0.2.7

- DESCRIPTION file.
- User guides, package vignettes and other documentation.

## Help Pages

idealstan-package | 'idealstan' package
idealdata-class | Data and Identification for 'id_estimate'
idealstan | 'idealstan' package
idealstan-class | Results of 'id_estimate' function
id_estimate | Estimate an 'idealstan' model
id_extract | Generic Method for Extracting Posterior Samples
id_extract-method | Extract 'stan' joint posterior distribution from 'idealstan' object
id_log_lik | Generic Method for Extracting Log Likelihood from Stan Objects
id_log_lik-method | Extract Log-Likelihood of the Posterior
id_make | Create data to run IRT model
id_plot | Generic Function for Plotting 'idealstan' objects
id_plot-method | Plot Results of 'id_estimate'
id_plot_all_hist | Density plots of Posterior Parameters
id_plot_compare | Function to compare two fitted idealstan models by plotting ideal points. Assumes that underlying data is the same for both models.
id_plot_legis | Plot Legislator/Person and Bill/Item Ideal Points
id_plot_ppc | Generic Method for Plotting Posterior Predictive Distribution
id_plot_ppc-method | Plot Posterior Predictive Distribution for 'idealstan' Objects
id_plot_rhats | Plotting Function to Display Rhat Distribution
id_plot_sims | This function plots the results from a simulation generated by 'id_sim_gen'.
id_post_pred | Generic Method for Obtaining Posterior Predictive Distribution from Stan Objects
id_post_pred-method | Posterior Prediction for 'idealstan' objects
id_sim_coverage | Function that computes how often the true value of the parameter is included within the 95/5 high posterior density interval
id_sim_gen | Simulate IRT ideal point data
id_sim_resid | Residual function for checking estimated samples compared to true simulation scores Returns a data frame with residuals plus quantiles.
id_sim_rmse | RMSE function for calculating individual RMSE values compared to true simulation scores Returns a data frame with RMSE plus quantiles.
launch_shinystan | Generic Method to Use 'shinystan' with 'idealstan'
launch_shinystan-method | Function to Launch Shinystan with an 'idealstan' Object
release_questions | Function that provides additional check questions for package release
senate114 | Rollcall vote data for 114th Senate
senate114_fit | Fitted 'idealstan' model for 114th Senate Data
summary-method | Posterior Summaries for fitted 'idealstan' object