rudimentary data visualization with R

This release adds an example R plotting script to get an overview of the measured data in the standard data logging folder /var/lib/co2monitor/data/.

You may either view only the latest data since you last plugged in the device via

/usr/share/doc/co2monitor/examples/plot.R newest

or all the measured data via

/usr/share/doc/co2monitor/examples/plot.R all

This is for basic visualisation until the co2monitor-applet is ready.

An example output: