nodata bug fix

[ppinchuk]

Code was assuming user has pre-processed nodata values out of rasters. Now, we no longer make that assumption but instead read the tiff file with the nodata as NaNs and allow the user to fill the NaNs.

[Copilot]

Pull request overview

This PR updates reVRt’s GeoTIFF ingestion/processing pipeline to treat GeoTIFF nodata as missing values (NaNs via masked reads) instead of assuming users pre-clean rasters, and introduces configurable NA filling during layer construction.

Changes:

• Update load_data_using_layer_file_profile() to open GeoTIFFs with masked=True, optionally reproject to the LayeredFile profile, and optionally fill NA cells.
• Introduce LayerBuildConfig.na_fill and apply NA filling in raster pass-through processing and vector rasterization background fill.
• Expand unit/integration coverage for nodata-as-NaN behavior and NA filling; bump package version to 0.7.1.

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tests/python/unit/utilities/test_utilities_handlers.py	Adds a unit test verifying nodata becomes NaN and optional fillna behavior.
tests/python/unit/costs/test_costs_layer_creator.py	Adds tests for NA fill behavior in raster processing (including large negative nodata) and vector rasterization background fill.
tests/python/integration/test_utilties_handlers.py	Updates integration assertions to use masked reads and equal_nan=True comparisons.
revrt/utilities/handlers.py	Routes GeoTIFF ingestion through load_data_using_layer_file_profile() to preserve nodata as NaN.
revrt/utilities/base.py	Implements masked GeoTIFF loading + optional reprojection and NA fill behavior.
revrt/models/cost_layers.py	Adds na_fill to LayerBuildConfig and removes Rasterize.fill.
revrt/costs/layer_creator.py	Applies na_fill after raster processing and uses it as the vector rasterization background fill.
revrt/costs/cli.py	Returns the created routing layer file path from build_routing_layer_file().
pyproject.toml	Bumps version to 0.7.1.
pixi.lock	Updates lock metadata for the version bump.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 96.63%. Comparing base (31a743c) to head (c7d4bd2).

Files with missing lines	Patch %	Lines
revrt/costs/layer_creator.py	75.00%	0 Missing and 1 partial ⚠️

❌ Your patch status has failed because the patch coverage (91.66%) is below the target coverage (93.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #277      +/-   ##
==========================================
- Coverage   96.66%   96.63%   -0.03%     
==========================================
  Files          27       27              
  Lines        3234     3237       +3     
  Branches      391      391              
==========================================
+ Hits         3126     3128       +2     
  Misses         61       61              
- Partials       47       48       +1     

Flag	Coverage Δ
unittests	96.63% <91.66%> (-0.03%)	⬇️

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