This S3 method allows you to retrieve either the number of observations or number of entities in the data used to fit wbm objects.

# S3 method for wbm
nobs(object, entities = TRUE, ...)



A fitted model object.


Should nobs return the number of entities in the panel or the number of rows in the panel_data frame? Default is TRUE, returning the number of entities.


Further arguments to be passed to methods.


data("WageData") wages <- panel_data(WageData, id = id, wave = t) model <- wbm(lwage ~ lag(union) + wks, data = wages) nobs(model)
#> [1] 595