ggfortify

Provides a single autoplot() function that works with over 50 statistical model classes from packages like stats and forecast, drastically reducing code complexity for diverse analyses.

Outputs are ggplot2 objects, allowing full customization using familiar ggplot2 syntax and themes, as highlighted in the vignettes for extending plots.

Automatically generates regression diagnostics like residual and QQ plots for lm and glm models, streamlining model validation without manual data extraction.

Visualizes forecasts, decompositions, and ACF/PACF from packages like forecast and stats with minimal code, as demonstrated in the time series vignette.