Weights areĪutomatically standardised to sum to 1. Non-negative numbers the same length as the input. Should ties be kept together? The default, TRUE, Variable or function of variables to order by. Proportion of a group size does not yield an integer number of rows, theĪbsolute value of prop*nrow(.data) is rounded down. The result will be silently truncated to the group size.
If n is greater than the number of rows in the group (or prop > 1), If a negative value of n or prop is provided, the specified number or Provide either n, the number of rows, or prop, the Is recalculated based on the resulting data, otherwise the grouping is kept as is. preserve = FALSE (the default), the grouping structure Indices beyond the number of rows in the input are silently ignored.įor slice_helpers(), these arguments are passed on to methods.preserve The values provided must be either all positive or all negative. Provide either positive values to keep, or negative values to drop.
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