cogeotiff/rio-tiler

nodata value being ignored

Closed this issue · 3 comments

banesullivan commented

Here's an example dataset that seems to have the nodata value ignored (I'm also seeing the same result for tile())

from rio_tiler.io import Reader

class Im(bytes):
    def _repr_png_(self):
        return self

reader = Reader('https://github.com/giswqs/data/raw/main/raster/landsat7.tif')

Im(reader.preview(nodata=-1, max_size=256).render())

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cc @giswqs and originally reported in banesullivan/localtileserver#58

vincentsarago commented

🙏 thanks for the report @banesullivan

This is coming from the latest minor version of rio-tiler where we are not using WarpedVRT from nodata override but only

rio-tiler/rio_tiler/reader.py

Line 241 in 21c4dce

data.mask |= data == nodata

This will merge the old mask and the new mask from the provided nodata value.... while we only want one from the nodata.

Will fix this today!

  • 🎉1
banesullivan commented

Thanks for addressing this so quickly!!

I see 6.3.1 was issued 34de1a2 but perhaps the tag wasn't pushed?