omrivolk

https://www.dropbox.com/s/ufo6p6vmtta5kh9/osm.water.geojsonseq.zip?dl=0 It's an osmium export of some water polygons from: us-northeast-latest.osm.pbf

I've solved it for now by using a `-c` postfilter instead, for my use case it does what I want and does not raise an error.

@kylemcdonald do you know how to achieve this with rgba? My numpy array shape is (m,n,4) with the 4th value being the opacity between 0-1. I tried switching `rgb24` to...