materia-epd 0.2.3

Generic EPD Aggregator

Generic EPD Aggregator

---

Features

• Parse ILCD process and flow XMLs
• Normalize material properties and LCIA modules
• Aggregate impacts and compute weighted averages
• Write new ILCD XML datasets

---

Installation

Install via PyPI:

pip install materia-epd

Requires Python 3.10+.

---

Usage

Here’s a minimal example:

python -m materia <generic_processes_dir> <epd_processes_dir> -o <output_dir>

Note that you need to point to the \root\provesses folders and need to provide a \matches folder in the generic data folder to link generic products and EPDs. The .json files are named after corresponding generic products and should be strucured as follows:

{
  "type": "<aggregation_type>",  // "average" or "assembled"
  "uuids": [
    "<uuid-1>",
    "<uuid-2>",
    "<uuid-3>",
    "... more UUIDs ..."
  ]
}

where the provided uuids link to the process files of the EPDs that match.