equation()

[robjhyndman]

It would be nice to have a function that takes a model object and returns the latex equations to insert into an Rmarkdown document. This comes up all the time on crossvalidated.com. The latest example is https://stats.stackexchange.com/questions/340838/good-resource-for-converting-arima-output-in-r-to-equation-form

[mitchelloharawild]

This can be written as part of a report() generic, which returns appropriate output for a report.

On models, report() can return the equation for the model. A table can be produced for forecasts and accuracy measures.

[mitchelloharawild]

Could also be broken down into equation(), keeping report() for tabular ouputs.