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SpectroChemPy

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What is SpectroChemPy?

SpectroChemPy (SCPy) is a framework for processing, analyzing, and modeling spectroscopic data for chemistry with Python. It is cross-platform (Linux, Windows, macOS) and combines a lightweight scientific core with optional plugins for domain-specific workflows.

Its central object, NDDataset, provides numerical data together with coordinates, units, masks, labels, provenance, and metadata, making it easier to build reproducible spectroscopy workflows in Python.

Key Features

  • Core Data Structure: NDDataset with coordinates, units, masks, labels, provenance, and metadata
  • Project Management: Organize and manipulate multiple datasets within a Project
  • Data Processing:
    • Unit-aware mathematical operations
    • Baseline correction, automatic subtraction, interpolation, FFT workflows
    • Core processing with plugin-specific extensions where appropriate
  • Analysis Tools:
    • SVD, PCA, MCR-ALS, EFA, PLS, fitting, and related result objects
  • I/O and Interoperability:
    • Import from major spectroscopy and scientific data formats
    • Export to lightweight interchange formats such as CSV, JCAMP-DX, and minimal MATLAB .mat exchange files
    • Portable NDDataset ↔ xarray.Dataset ↔ NetCDF round-trips for the maintained portable subset
    • Safe native .scp / .pscp persistence by default, with explicit legacy opt-in only for historical trusted archives
  • Plugin System:
    • Automatic discovery of optional plugins
    • Namespaced APIs: scp.nmr.read_topspin(...), scp.iris.IRIS()
    • Dataset accessors for plugin-bound operations

Installation

The recommended way to install SpectroChemPy is with uv:

curl -LsSf https://astral.sh/uv/install.sh | sh   # if uv is not installed
uv venv scpy --python 3.13
source scpy/bin/activate
uv pip install spectrochempy

Alternatively, with mamba / conda:

mamba install -c spectrocat -c conda-forge spectrochempy

Or with pip:

pip install spectrochempy

See the full installation guide for platform-specific instructions, optional dependencies, and development setup.

Official Plugins

Extend SpectroChemPy with official plugins (installed separately):

Plugin Install What it provides
spectrochempy-carroucell uv pip install spectrochempy-carroucell Carroucell experiment reader
spectrochempy-hypercomplex uv pip install spectrochempy-hypercomplex Quaternion / hypercomplex support
spectrochempy-iris uv pip install spectrochempy-iris 2D-IRIS analysis tools
spectrochempy-nmr uv pip install spectrochempy-nmr Bruker TopSpin reader, NMR-specific processing
spectrochempy-perkinelmer uv pip install spectrochempy-perkinelmer PerkinElmer .sp IR file reader
spectrochempy-tensor uv pip install spectrochempy-tensor Tensor learning tools

pip install works as well if you are not using uv.

Plugins are also available via conda from the spectrocat channel:

mamba install -c spectrocat -c conda-forge spectrochempy-nmr

Plugins are discovered automatically once installed — no manual loading step required.

Experimental plugins

spectrochempy-cantera is available as an experimental plugin. It is not officially supported, not included in aggregate extras, and must be installed manually::

pip install spectrochempy-cantera

For contributors

If you want to contribute, start with:

Maintainer release procedures live in maintainers/. Architecture, RFCs, and roadmap discussions are maintained in the SpectroChemPy Maintainer Repository.

License

CeCILL-B FREE SOFTWARE LICENSE AGREEMENT

Metadata

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