Testing your installation

To make sure AVNI was installed correctly, type the following command in a terminal:

python -c "import avni; avni.sys_info()"

Hint

If you installed AVNI using one of our installers, enter the above command in the Prompt.

This should display some system information along with the versions of AVNI and its dependencies. Typical output looks like this:

Platform:      Linux-5.0.0-1031-gcp-x86_64-with-glibc2.2.5
Python:        3.8.1 (default, Dec 20 2019, 10:06:11)  [GCC 7.4.0]
Executable:    /home/travis/virtualenv/python3.8.1/bin/python
CPU:           x86_64: 2 cores
Memory:        7.8 GB

avni:           0.1.dev0
numpy:         1.19.0.dev0+8dfaa4a {blas=openblas, lapack=openblas}
scipy:         1.5.0.dev0+f614064
matplotlib:    3.2.1 {backend=QtAgg}

sklearn:       0.22.2.post1
numba:         0.49.0
nibabel:       3.1.0
cupy:          Not found
pandas:        1.0.3
dipy:          1.1.1
pyvista:       0.25.2 {pyvistaqt=0.1.0}
vtk:           9.0.0
qtpy:          2.0.1 {PySide6=6.2.4}

If you get an error…

If you see an error like:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'avni'

This suggests that your environment containing AVNI is not active. If you followed the setup for 3D plotting/source analysis (i.e., you installed to a new avni environment instead of the base environment) try running conda activate avni first, and try again. If this works, you might want to set your terminal to automatically activate the avni environment each time you open a terminal:

echo conda activate avni >> ~/.bashrc    # for bash shells
echo conda activate avni >> ~/.zprofile  # for zsh shells

If something else went wrong during installation and you can’t figure it out, check out the Advanced setup instructions to see if your problem is discussed there. If not, the AVNI Forum is a good resources for troubleshooting installation problems.