# xarray.DataArray.bfill¶

DataArray.bfill(dim, limit=None)

Fill NaN values by propogating values backward

Requires bottleneck.

Parameters
dimstr

Specifies the dimension along which to propagate values when filling.

limitint, default None

The maximum number of consecutive NaN values to backward fill. In other words, if there is a gap with more than this number of consecutive NaNs, it will only be partially filled. Must be greater than 0 or None for no limit.

Returns
DataArray