Quick Start
Getting started with Girth.
Installation
The easiest way to get started is to install girth via pip and import the module:
pip install girth --upgrade
import girth
If you would like to build girth from source, check out the repository and install it
git clone https://github.com/eribean/girth.git
cd girth
python setup.py install
Data format
IRT response data should be stored in a 2D numpy array. This array holds the measured responses with the number of rows (vertical) equal to the number of items in the test, and the number of columns (horizontal) equal to the number of participants in the test.

Example girth array layout
It is up to the user to manipulate the data into this standardized format.
Warning
Missing data is supported for dichotomous measurements only. Use NAN (numpy.nan) to represent missing values.Last modified March 22, 2020: Fixed image file pointer. (e4c33b4)