pyemsi

Python tools for EMSolution FEMAP Neutral file conversion and interactive 3D visualization with VTK.

Overview

pyemsi provides powerful tools for working with EMSolution FEMAP Neutral (.neu) files, enabling seamless conversion to VTK formats for advanced visualization in ParaView and interactive 3D exploration through Qt-based desktop applications.

Key Features

• FEMAP to VTK Conversion: Convert EMSolution FEMAP Neutral files to VTK MultiBlock UnstructuredGrid (.vtm) format
• High-Performance Parsing: Cython-accelerated parser for fast processing of large models
• Interactive 3D Visualization: Desktop Qt and Jupyter notebook visualization with PyVista
• Comprehensive Data Support: Handle displacement, magnetic, current, force, and heat data

Installation

Standard Installation

pip install pyemsi

With Jupyter Notebook Support

For interactive visualization in Jupyter notebooks:

pip install pyemsi[jupyter]

From Source

For development or the latest features:

git clone https://github.com/EMSolution-SSIL/pyemsi.git
cd pyemsi
pip install -e .

Note: Building from source requires Cython>=3.0.0 and numpy>=1.21.0. These will be installed automatically during the build process.

Qt Resources

If you're developing pyemsi and need to modify Qt resources (icons, UI files), you'll need to manually compile them:

pyside6-rcc.exe .\pyemsi\resources\resources.qrc -g python -o .\pyemsi\resources\resources.py

Cython Extension

The femap_parser module is implemented in Cython for performance. When building from source, the extension will be compiled automatically. Pre-generated C files are included in source distributions for users without Cython.

Documentation

For comprehensive API documentation and tutorials, visit:

https://emsolution-ssil.github.io/pyemsi

Requirements

• Python >= 3.9
• VTK >= 9.0.0
• PyVista >= 0.43.0
• PySide6 >= 6.5.0
• NumPy >= 1.21.0

License

GNU General Public License v3.0 or later (GPLv3+) - Copyright (c) 2026 SSIL

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.