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davidavdav / NamedArrays.jl

Julia type that implements a drop-in replacement of Array with named dimensions
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Naming only some dimensions #80

Open jlumpe opened 5 years ago

jlumpe commented 5 years ago

I have a 2D array of time series data. The rows corresponds to variables, so I want to apply names there. The columns correspond to time points so naming them doesn't really make sense. I'm also somewhat worried about performance if an OrderedDict of strings is created for many thousands of columns.

Is there some way to name only the rows and not the columns?

davidavdav commented 5 years ago

I don't think it is possible now to have a dimension without a dictionary.

I suppose many thousands is not really an issue on modern hardware, it will take a bit of memory which is wasted indeed. Maybe you can replace a standard OrderedDict with your own fake OrderedDict type after construction. The fake OrderedDict type should implement the Associative interface, but trivially, in a dict[key] == key way. But I don't know if that would work in NamedArrays.