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@nkeim nkeim commented Nov 25, 2015

This drops the ability to link a DataFrame in-place. The only API change is to remove the copy_features option to link_df(). The corresponding test was removed as well. link_df() now wraps link_df_iter(), with some basic (and hopefully well-optimized) one-time Pandas operations on the input and output. This code is not very optimized, but it is lightweight and hopefully avoids the present N^2 performance bug.

Does this close #294 ? Probably, but some simple performance scaling checks would be wise. I'll see if I can get around to it.

@nkeim nkeim added this to the 0.4 milestone Nov 25, 2015
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nkeim commented Nov 25, 2015

I just realized that this reverses #293 and does not handle empty frames. Sorry I forgot about that. I think that means we need more tests.

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This is superseded by #442. Closing

@caspervdw caspervdw closed this Jul 27, 2017
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Link_df runs very slow with large data sets

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