known keys for empty groups #499
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Fil
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Aug 13, 2021
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…mpty points where there is no data
This was referenced Aug 13, 2021
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When retaining empty bins,
b[0]will be undefined. However, since the bin can only possibly contain values in the current group, we may still know what the appropriate z, fill or stroke channel should be for the empty bin, and hence can propagate it.Needs testing, possibly optimization, and probably applies to the group transform, too.