This is nwbwidgets, widgets for viewing the contents of a NWB-file in Jupyter Notebooks using ipywidgets.
Project description
NWB Widgets
A library of widgets for visualization NWB data in a Jupyter notebook (or lab). The widgets allow you to navigate through the hierarchical structure of the NWB file and visualize specific data elements. It is designed to work out-of-the-box with NWB 2.0 files and to be easy to extend.
Installation
nwbwidgets requires Python >= 3.7.
The latest published version can be installed by running:
pip install nwbwidgets
Note that there are some optional dependencies required for some widgets. If an NWB data file contains a data type that requires additional dependencies, you will see a list of extra modules needed for that specific widget. All other widgets in the file will still work.
Usage
from pynwb import NWBHDF5IO
from nwbwidgets import nwb2widget
io = NWBHDF5IO('path/to/file.nwb', mode='r')
nwb = io.read()
nwb2widget(nwb)
Demo
How it works
All visualizations are controlled by the dictionary neurodata_vis_spec. The keys of this dictionary are pynwb neurodata types, and the values are functions that take as input that neurodata_type and output a visualization. The visualizations may be of type Widget or matplotlib.Figure. When you enter a neurodata_type instance into nwb2widget, it searches the neurodata_vis_spec for that instance's neurodata_type, progressing backwards through the parent classes of the neurodata_type to find the most specific neurodata_type in neurodata_vis_spec. Some of these types are containers for other types, and create accordian UI elements for its contents, which are then passed into the neurodata_vis_spec and rendered accordingly.
Instead of supplying a function for the value of the neurodata_vis_spec dict, you may provide a dict or OrderedDict with string keys and function values. In this case, a tab structure is rendered, with each of the key/value pairs as an individual tab. All accordian and tab structures are rendered lazily- they are only called with that tab is selected. As a result, you can provide may tabs for a single data type without a worry. They will only be run if they are selected.
Extending
To extend NWBWidgets, all you need to a function that takes as input an instance of a specific neurodata_type class, and outputs a matplotlib figure or a jupyter widget.
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