NatLabRockies · martin-springer · Mar 6, 2026 · Mar 6, 2026 · Mar 6, 2026 · Mar 6, 2026
diff --git a/.github/workflows/nbval.yaml b/.github/workflows/nbval.yaml
@@ -13,28 +13,22 @@ jobs:
           'TrendAnalysis_example.ipynb',
           'TrendAnalysis_example_NSRDB.ipynb',
           'degradation_and_soiling_example.ipynb',
-          'system_availability_example.ipynb'
+          'system_availability_example.ipynb',
+          'Multi-year_on_year_example.ipynb'
         ]
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python
-      uses: actions/setup-python@v5
+    - uses: prefix-dev/setup-pixi@v0.8.3
       with:
-        python-version: "3.12"
-    - name: Install notebook environment
+        environments: dev
+    - name: Validate notebook output
       run: |
-        python -m pip install --upgrade pip wheel
-        pip install --timeout=300 -r requirements.txt -r docs/notebook_requirements.txt .[test]
-    - name: Run notebook and check output
+        pixi run -e dev pytest --nbval --nbval-sanitize-with docs/nbval_sanitization_rules.cfg docs/${{ matrix.notebook-file }}
+    - name: Convert notebook to HTML
       run: |
-        # --nbval-sanitize-with:  pre-process text to remove irrelevant differences (e.g. warning filepaths)
-        pytest --nbval --nbval-sanitize-with docs/nbval_sanitization_rules.cfg docs/${{ matrix.notebook-file }}
-    - name: Run notebooks again, save files
-      run: |
-        pip install nbconvert[webpdf]
         mkdir docs/artifacts
-        jupyter nbconvert --to html --execute --ExecutePreprocessor.timeout=600 --allow-errors --output artifacts/${{ matrix.notebook-file }}.html docs/${{ matrix.notebook-file }}
+        pixi run -e dev jupyter nbconvert --to html --output artifacts/${{ matrix.notebook-file }}.html docs/${{ matrix.notebook-file }}
     - name: Upload artifacts
       uses: actions/upload-artifact@v4
       with:

diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
@@ -9,24 +9,60 @@ on:
 
 
 jobs:
-  build:
+  validate-envs:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: prefix-dev/setup-pixi@v0.8.3
+      with:
+        environments: core default dev
+        frozen: true
+    - name: Validate core environment
+      run: pixi run -e core python -c "import rdtools; print(rdtools.__version__)"
+    - name: Validate default environment
+      run: pixi run python -c "import rdtools; import jupyter; print('default OK')"
+    - name: Validate dev environment
+      run: pixi run -e dev python -c "import rdtools; import pytest; import jupyter; print('dev OK')"
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        environment: [dev-py310, dev-py311, dev-py312, dev-py313, dev-py314]
+      fail-fast: false
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: prefix-dev/setup-pixi@v0.8.3
+      with:
+        environments: ${{ matrix.environment }}
+    - name: Test with pytest (${{ matrix.environment }})
+      run: pixi run -e ${{ matrix.environment }} test
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v4
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  test-min:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: prefix-dev/setup-pixi@v0.8.3
+      with:
+        environments: dev-min
+    - name: Test with pytest (minimum versions)
+      run: pixi run -e dev-min test
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v4
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
+  test-latest:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13"]
-        env: [
-          '-r requirements.txt .[test]',
-          '-r requirements-min.txt .[test]',
-          '--upgrade --upgrade-strategy=eager .[test]'
-        ]
-        exclude:
-          - python-version: "3.11"
-            env: '-r requirements-min.txt .[test]'
-          - python-version: "3.12"
-            env: '-r requirements-min.txt .[test]'
-          - python-version: "3.13"
-            env: '-r requirements-min.txt .[test]'
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
       fail-fast: false
 
     steps:
@@ -35,13 +71,12 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install ${{ matrix.env }}
+    - name: Install latest versions
       run: |
         python -m pip install --upgrade pip wheel
-        pip install --timeout=300 ${{ matrix.env }}
-    - name: Test with pytest ${{ matrix.env }}
-      run: |
-        python -m pytest --cov=./ --cov-report=xml
+        pip install --timeout=300 --upgrade --upgrade-strategy=eager .[test]
+    - name: Test with pytest (latest)
+      run: python -m pytest --cov=rdtools --cov-report=xml
     - name: Upload coverage reports to Codecov
       uses: codecov/codecov-action@v4
       env:

diff --git a/.github/workflows/requirements.yaml b/.github/workflows/requirements.yaml
diff --git a/.gitignore b/.gitignore
@@ -11,6 +11,7 @@
 .coveralls.yml
 .coverage
 .coverage.*
+coverage.xml
 htmlcov/
 
 # ignore test cache
@@ -38,5 +39,9 @@ rdtools.egg-info*
 
 *.pickle
 
+# pixi environments (local, not committed)
+.pixi/*
+!.pixi/config.toml
+
 # ignore vscode settings
 .vscode/
diff --git a/.pixi.lnk b/.pixi.lnk
diff --git a/CITATION.cff b/CITATION.cff
@@ -43,4 +43,4 @@ authors:
   orcid: "https://orcid.org/0000-0002-9867-8930"
 title: "RdTools"
 doi: 10.5281/zenodo.1210316
-url: "https://github.com/NREL/rdtools"
+url: "https://github.com/NatLabRockies/rdtools"
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
@@ -55,7 +55,7 @@ further defined and clarified by project maintainers.
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at RdTools@nrel.gov. All
+reported by contacting the project team at RdTools@nlr.gov. All
 complaints will be reviewed and investigated and will result in a response that
 is deemed necessary and appropriate to the circumstances. The project team is
 obligated to maintain confidentiality with regard to the reporter of an incident.

diff --git a/MANIFEST.in b/MANIFEST.in
diff --git a/README.md b/README.md
@@ -1,13 +1,13 @@
 <img src="./docs/sphinx/source/_images/logo_horizontal_highres.png" width="500" alt="RdTools logo"/>
 
 Master branch:
-[![Build Status](https://github.com/NREL/rdtools/workflows/pytest/badge.svg?branch=master)](https://github.com/NREL/rdtools/actions?query=branch%3Amaster)
+[![Build Status](https://github.com/NatLabRockies/rdtools/actions/workflows/pytest.yaml/badge.svg?branch=master)](https://github.com/NatLabRockies/rdtools/actions/workflows/pytest.yaml?query=branch%3Amaster)
 
 Development branch:
-[![Build Status](https://github.com/NREL/rdtools/workflows/pytest/badge.svg?branch=development)](https://github.com/NREL/rdtools/actions?query=branch%3Adevelopment)
+[![Build Status](https://github.com/NatLabRockies/rdtools/actions/workflows/pytest.yaml/badge.svg?branch=development)](https://github.com/NatLabRockies/rdtools/actions/workflows/pytest.yaml?query=branch%3Adevelopment)
 
 Code coverage:
-[![codecov](https://codecov.io/gh/NREL/rdtools/graph/badge.svg?token=K2HDjFkBws)](https://codecov.io/gh/NREL/rdtools)
+[![codecov](https://codecov.io/gh/NatLabRockies/rdtools/graph/badge.svg?token=K2HDjFkBws)](https://codecov.io/gh/NatLabRockies/rdtools)
 
 RdTools is an open-source library to support reproducible technical analysis of
 time series data from photovoltaic energy systems. The library aims to provide
@@ -25,20 +25,46 @@ command line:
 pip install rdtools
 ```
 
+Optional extras are available:
+
+```
+pip install rdtools[notebooks]  # Jupyter and notebook dependencies
+pip install rdtools[test]       # pytest, coverage, flake8
+pip install rdtools[dev]        # notebooks + test combined
+```
+
+Alternatively, RdTools uses [pixi](https://pixi.sh) for reproducible
+environment management. To get started with pixi:
+
+```
+pixi install          # default environment (core + notebooks)
+pixi run lab          # launch Jupyter Lab
+```
+
+For development, use the `dev` environment which includes both notebook
+and test dependencies:
+
+```
+pixi shell -e dev     # activate the dev environment
+pixi run -e dev test  # run pytest with coverage
+pixi run -e dev nbval # validate notebooks
+pixi run -e dev lab   # launch Jupyter Lab
+```
+
 For API documentation and full examples, please see the [documentation](https://rdtools.readthedocs.io).
 
-RdTools currently is tested on Python 3.9+.
+RdTools currently is tested on Python 3.10+.
 
 ## Citing RdTools
 
 To cite RdTools, please use the following along with the version number
 and the specific DOI coresponding to that version from [Zenodo](https://doi.org/10.5281/zenodo.1210316):
 
--  Michael G. Deceglie, Kevin Anderson,  Adam Shinn, Ambarish Nag, Mark Mikofski,
-   Martin Springer, Jiyang Yan, Kirsten Perry, Sandra Villamar, Will Vining,
+-  Michael G. Deceglie, Martin Springer, Kevin Anderson,  Adam Shinn, Kirsten Perry, Ambarish Nag,
+   Mark Mikofski, Jiyang Yan, Sandra Villamar, Will Vining,
    Gregory Kimball, Daniel Ruth, Noah Moyer, Quyen Nguyen, Dirk Jordan,
    Matthew Muller, and Chris Deline, RdTools, version {insert version}, Computer Software,
-   https://github.com/NREL/rdtools. DOI:{insert DOI}
+   https://github.com/NatLabRockies/rdtools. DOI:{insert DOI}
 
 The underlying workflow of RdTools has been published in several places.
 If you use RdTools in a published work, you may also wish to cite the following as
@@ -76,5 +102,5 @@ Other useful references which may also be consulted for degradation rate methodo
 
 ## Further Instructions and Updates
 
-Check out the [wiki](https://github.com/NREL/rdtools/wiki) for additional usage documentation, and for information on development goals and framework.
+Check out the [wiki](https://github.com/NatLabRockies/rdtools/wiki) for additional usage documentation, and for information on development goals and framework.