foxplot 2.1.0

Plot time-series data from line-delimited JSON.

foxplot

Manipulate time series read from MessagePack or newline-delimited JSON.

Installation

pip install foxplot

Usage

The foxplot command-line tool starts in interactive mode by default to explore the input gathered in data (tab completion works: try data.<TAB>). Plot times series using the fox.plot function, for example:

$ foxplot upkie_2023-05-03-103245.mpack
Python 3.8.10 (default, Mar 13 2023, 10:26:41)
Type 'copyright', 'credits' or 'license' for more information
IPython 8.0.1 -- An enhanced Interactive Python. Type '?' for help.

In [1]: fox.plot(data.observation.imu.angular_velocity)

This call opens a new tab in your browser with the desired plot. In this example, angular_velocity is a 3D vector, thus the plot will include three curves.

Check out the documentation for more advanced examples, such as left and right axes or computing new series from existing ones.

See also

• mpacklog.cpp: library to log dictionaries to MessagePack files in C++.
• mpacklog.py: library and command-line tools to log dictionaries to MessagePack files in Python.
• rq: command-line tool to manipulate streams of records in various formats.
• uplot-python: plotting backend used in this project.
• µPlot: time-series plotting library, whose performance was a key enabler for this project.