# xarray.core.coordinates.DataArrayCoordinates.merge

`DataArrayCoordinates.``merge`(other: Coordinates) → Dataset

  Merge two sets of coordinates to create a new Dataset

  The method implements the logic used for joining coordinates in the result of a binary operation performed on xarray objects:

  - If two index coordinates conflict (are not equal), an exception is raised. You must align your data before passing it to this method.
  - If an index coordinate and a non-index coordinate conflict, the non- index coordinate is dropped.
  - If two non-index coordinates conflict, both are dropped.

  Parameters: | other (DatasetCoordinates or DataArrayCoordinates) – The coordinates from another dataset or data array.
  Returns: | merged – A new Dataset with merged coordinates.
  Return type: | Dataset