Check that all forecasts have the same number of rows

Helper function that checks the number of rows (corresponding e.g to quantiles or samples) per forecast. If the number of quantiles or samples is the same for all forecasts, it returns TRUE and a string with an error message otherwise.

Usage

check_number_per_forecast(data, forecast_unit)

Arguments

data

A data.frame or similar to be checked

forecast_unit

Character vector denoting the unit of a single forecast.

Value

Returns TRUE if the check was successful and a string with an error message otherwise.