Support for LERC & LERC_DEFLATE compression

[maawoo]

Expected behavior and actual behavior.

Expected: LERC and LERC_DEFLATE compression options are available with GDAL >= 3.3.0 and libtiff >= 4.3.0 (as described here)

Actual: I guess they're not available?

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
/tmp/ipykernel_17587/957075258.py in <module>
      1 with rasterio.open(test_file) as raster:
----> 2     raster.profile

rasterio/_base.pyx in rasterio._base.DatasetBase.profile.__get__()

rasterio/_base.pyx in rasterio._base.DatasetBase.compression.__get__()

~/.conda/envs/COPA_cube/lib/python3.9/enum.py in __call__(cls, value, names, module, qualname, type, start)
    382         """
    383         if names is None:  # simple value lookup
--> 384             return cls.__new__(cls, value)
    385         # otherwise, functional API: we're creating a new Enum type
    386         return cls._create_(

~/.conda/envs/COPA_cube/lib/python3.9/enum.py in __new__(cls, value)
    700                 ve_exc = ValueError("%r is not a valid %s" % (value, cls.__qualname__))
    701                 if result is None and exc is None:
--> 702                     raise ve_exc
    703                 elif exc is None:
    704                     exc = TypeError(

ValueError: 'LERC_DEFLATE' is not a valid Compression

Steps to reproduce the problem.

with rasterio.open(my_raster) as raster:
    raster.profile

Relevant information from gdalinfo about the raster file:

Image Structure Metadata:
  COMPRESSION=LERC_DEFLATE
  INTERLEAVE=BAND
  LERC_VERSION=2.4

Operating system

CentOS 7.9.2009

Rasterio version and provenance

libgdal                   3.3.1                h8f005ca_1    conda-forge
rasterio                  1.2.6            py39hbc4e497_2    conda-forge
libtiff                   4.3.0                hf544144_1    conda-forge

---

I also double-checked by creating a new conda environment locally on my Windows machine, only installing rasterio (same version as above) and try with the same raster file. Results in the same error.

[vincentsarago]

@maawoo LERC is an optional driver in GDAL and thus is not included in rasterio wheels. If you install rasterio from source (pip install rasterio --no-binary rasterio) in an environment where GDAL has been compiled with LERC option ON it should work.

ps: The mapbox/rasterio repo and its maintainers are not responsible for the conda packages

[maawoo]

@vincentsarago thanks for your insight!
Are there any plans to include LERC in the rasterio wheels in the near future?

There's currently work being done on a new Sentinel-1 NRB product, which will likely use LERC_DEFLATE for compression.
Would be great if users can use Python tools such as rasterio with this data product without running into any additional hassles.

ping @johntruckenbrodt, as this will probably interest you as well.

[vincentsarago]

you can open an issue in https://github.com/rasterio/rasterio-wheels

[sgillies]

It's a challenge to keep up with all the new GDAL features. There has been an explosion in the number of compression options 😆