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Only set fill value as nan for floating point arrays #113

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Mar 13, 2024
Merged

Only set fill value as nan for floating point arrays #113

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12 changes: 10 additions & 2 deletions ndpyramid/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,12 @@
import xarray as xr

from .common import Projection
from .utils import add_metadata_and_zarr_encoding, get_levels, get_version, multiscales_template
from .utils import (
add_metadata_and_zarr_encoding,
get_levels,
get_version,
multiscales_template,
)


def pyramid_coarsen(
Expand Down Expand Up @@ -132,7 +137,10 @@ def pyramid_reproject(
dst_transform = projection_model.transform(dim=dim)

def reproject(da, var):
da.encoding['_FillValue'] = np.nan
# Set float FillValue that rasterio will use to initialize array
if da.encoding.get('_FillValue') is None and np.issubdtype(da.dtype, np.floating):
da.encoding['_FillValue'] = np.nan

da = da.rio.reproject(
projection_model._crs,
resampling=Resampling[resampling_dict[var]],
Expand Down
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