Resampler.first(_method='first', min_count=0, *args, **kwargs)[source]

Compute first of group values.

numeric_onlybool, default False

Include only float, int, boolean columns. If None, will attempt to use everything, then use only numeric data.

min_countint, default -1

The required number of valid values to perform the operation. If fewer than min_count non-NA values are present the result will be NA.

Series or DataFrame

Computed first of values within each group.