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Allow multilabels in VectorDataset #862

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pmandiola
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This PR modifies VectorDataset to handle multiple labels. Without this, masks built from shapefiles are always coded into binary masks.

An optional parameter label_name is added to VectorDataset to indicate the name of the property where the label is stored in the shapefile. This label is then rasterized to the mask, instead of just a 1.

Here is an example of a mask from a VectorDataset using this option:

image

I added an additional test to VectorDataset, but I'm not sure its the right way to do it. Let me know if it's ok or I can change it if needed.

@github-actions github-actions bot added datasets Geospatial or benchmark datasets testing Continuous integration testing labels Oct 20, 2022
@adamjstewart adamjstewart added this to the 0.4.0 milestone Oct 20, 2022
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This looks great! One small comment on how the tests could be simplified.

tests/datasets/test_geo.py Outdated Show resolved Hide resolved
@pmandiola
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pmandiola commented Oct 24, 2022

@microsoft-github-policy-service agree company="Bain & Company"

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Thanks Adam! Just updated with your suggested changes and I accepted the CLA.

@adamjstewart adamjstewart merged commit f20556c into microsoft:main Oct 26, 2022
yichiac pushed a commit to yichiac/torchgeo that referenced this pull request Apr 29, 2023
* add label_name param to VectorDataset

* small fix by black

* add tests

* reuse CustomVectorDataset

* versionadded in docstring
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2 participants