createlagvars: createlagvars
In strm: Spatio-Temporal Regression Modeling

Creates lagged explanatory and response variables for data in long format.

1	createlagvars(data, vars, id, time = time, wide, filter_options)

`data`	Name of dataframe that has been transformed in strm (object `modframe0`).
`vars`	Response and explanatory variables to be lagged.
`id`	Group identifier (example: state).
`time`	Number of time periods in the dataset. Lags will be taken for each time period. Default is 2 time periods. For a spatial-only regression model, set `time=1`.
`wide`	Boolean indicator. Takes `TRUE` if data is in wide format and `FALSE` if data is in long format. Default is `FALSE`.
`filter_options`	Additional arguments to be passed to `dplyr::filter()`.