A Qt-based graphical tool for processing and exploring tabular datasets (CSV) in machine learning and data analysis projects.

Note that DataMole is still experimental and under development.

• Features
  • Screenshots
• Installation
• Software usage
• Developer info
  • Building documentation with Sphinx
• Credits

• Import and export CSV dataset
• Apply transformations using the graphical interface:
  • Fill missing values
  • Replace values
  • Discretize numeric columns or datetimes attributes
  • Scale columns
  • One-hot encode
  • Add/remove columns
  • Join two tables
  • Convert types (e.g. numeric -> string)
  • Extract time series information from longitudinal datasets
• Draw scatterplots and line charts for time series
• Get data statistics (histogram, mean, std, etc.)
• Create pipelines of transformations and execute them
• Import and export pipelines (in pickle)

DataMole main window Scatterplot matrix on iris dataset Preprocessing pipeline

1. Install Python >= 3.8.0
2. Open a terminal. On Windows 10 use the Windows PowerShell
3. Create a virtualenv (*):
   • Install virtualenv: python -m pip install virtualenv
   • Move in the main dataMole folder (the one with main.py)
   • Create a virtualenv: python -m virtualenv venv
   • Activate it: source ./venv/bin/activate (.\venv\Scripts\Activate.ps1 on Windows)
4. With the active virtualenv, install dependencies: python -m pip install -r requirements.txt
5. Generate Qt resources: make resources (**)
6. Start software with python main.py

(**) On Windows make command does not work, so the command to give at step 5 is:

• pyside2-rcc dataMole/resources.qrc -o dataMole/qt_resources.py

This will generate a new file qt_resources.py.

Refer to the user manual in docs/manuals

In addition to the packages listed in requirements.txt you may want to install the ones listed in requirements.dev.txt.

Refer to the developer manual in docs/manuals for information about software architecture and on how to extend it.

Manuals .tex source files are in docs/manuals/source folder.

1. Move into the docs folder
2. Generate stubs (rst) if required: make stubs
3. Generate documentation:
   • make html for html documentation
   • make pdf to convert the documentation in a single pdf file

The output will be found in the auto/build directory.

Use make clean to remove the build directory.

Here is a list of third party software used within this project.

• dsideb/nodegraph-pyqt: an interactive DAG visualization tool built in PySide/PyQt, licensed under GNU GPL-3.0;
• z3ntu/QtWaitingSpinner: configurable Qt widget for showing a waiting spinner, with MIT license.