| calc_density | Internal helper to calculate the (group-specific) density of a variable |
| capitalize_firstLetter | Internal function to capitalize the first letter of a character |
| compute_marginalAPCeffects | Internal helper to compute marginal APC effects and their confidence intervals |
| compute_xCoordinate | Internal helper to tilt the x-axis for the hexamap plot |
| compute_yCoordinate | Internal helper to tilt the x-axis for the hexamap plot |
| create_APCsummary | Create a summary table for multiple estimated GAM models |
| create_groupVariable | Internal helper to create a group variable as base for a density matrix |
| create_highlightDiagonalData | Internal helper to create a dataset for ggplot2 to highlight diagonals |
| create_modelSummary | Create model summary tables for multiple estimated GAM models |
| create_oneAPCsummaryTable | Internal helper to create a summary table for one estimated GAM model |
| drug_deaths | Drug deaths of white men in the United States |
| ensure_segmentsInPlotRange | Internal helper for gg_addReferenceLines to keep diagonal lines in the plot range |
| extract_summary_linearEffects | Internal helper to extract summary of linear effects in a gam model |
| get_plotGAMobject | Extract returned values of plot.gam() while suppressing creation of the plot |
| gg_addReferenceLines | Internal helper to add reference lines in an APC heatmap |
| gg_highlightDiagonals | Internal helper to add the diagonal highlighting to a ggplot |
| plot_1Dsmooth | Plot 1D smooth effects for 'gam' models |
| plot_APCheatmap | Heatmap of an APC surface |
| plot_APChexamap | Hexamap of an APC surface |
| plot_density | Plot the density of one metric or categorical variable |
| plot_densityMatrix | Create a matrix of density plots |
| plot_density_categorical | Internal helper to plot a categorical density |
| plot_density_metric | Internal helper to plot a metric density |
| plot_jointMarginalAPCeffects | Joint plot to compare the marginal APC effects of multiple models |
| plot_linearEffects | Plot linear effects of a gam in an effect plot |
| plot_marginalAPCeffects | Plot of marginal APC effects based on an estimated GAM model |
| plot_partialAPCeffects | Partial APC plots based on an estimated GAM model |
| plot_variable | Distribution plot of one variable against one APC dimension |
| travel | Data from the German Reiseanalyse survey |