Add feature_indices_
attribute to mapper
#56
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The attribute indicatesthe mapping between input and ouptut variables (see added docs). I'd like someone to give +1 before merging. :) @asford ?
Differences with implementation in #54:
self.feature_widths_
and calculating theself.feature_indices_
property on the fly, here I storeself.feature_widths_
directlyfit
andtransform
during the mapperfit
. Since there is no reliable way to calculate the feature weights before applying the full transform, I prefer to leave the attribute unavailable until then. I don't know if it would be interesting to turn the attribute into a property to be able to raise a custom informative exception when some tries to access the attribute before transformation.Thoughts?