Upsampling - fill

[slharris]

Will the next version of xray have the capability to fill when upsampling?

[shoyer]

It would be pretty straightforward to add the pandas up-sampling fill methods. This is not on my immediate priority list, but I'm happy to point you in the right direction if you're interested in making a contribution.

[slharris]

I could try....

[shoyer]

Upsampling (in both xray and pandas) is done through a reindex operation. So doing filling while resampling is simply a matter of adding a fill_method argument to resample [1], passing it on to the GroupBy object [2], and using it for the method argument when we call _maybe_restore_empty_groups [3].

Here are the relevant lines in xray:
[1] https://github.com/xray/xray/blob/v0.6.0/xray/core/common.py#L277-L351
[2] https://github.com/xray/xray/blob/v0.6.0/xray/core/groupby.py#L86
[3] https://github.com/xray/xray/blob/v0.6.0/xray/core/groupby.py#L221-L229

[slharris]

I am sorry but I do not think I can make a contribution. I really do not
know what I am doing!

I hope someone with some skills can add the fill method for up-sampling?