issues: 1429172192

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
1429172192 I_kwDOAMm_X85VL2_g 7239 include/exclude lists in Dataset.expand_dims 90008 closed 0     6 2022-10-31T03:01:52Z 2023-11-05T06:29:06Z 2023-11-05T06:29:06Z CONTRIBUTOR      

Is your feature request related to a problem?

I would like to be able to expand the dimensions of a dataset, but most of the time, I only want to expand the datasets of a few key variables.

It would be nice if there were some kind of filter mechanism.

Describe the solution you'd like

```python import xarray as xr dataset = xr.Dataset(data_vars={'foo': 1, 'bar': 2}) dataset.expand_dims("zar", include_variables=["foo"])

Only foo is expanded, bar is left alone.

```

Describe alternatives you've considered

Writing my own function. I'll probably do this.

Subclassing. Too confusing and easy to "diverge" from you all when you do decide to implment this.

Additional context

For large datasets, you likely just want some key parameters expanded, and not all parameters expanded.

xarray version: 2022.10.0

 
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