I had to take a forced break from training and used the spare time to write some (probably bad) code for a tool that essentially compares c2 stroke data across different workout/sessions (I'm sure it works for RowErg and SkiErg, maybe also for BikeErg but I don't have one so I cannot check). Here's an example of what it does:
Link to the source code (python): here
A bit of explanation on how to use it:
- It's python code so you'll have to install python 3.11, and a few packages (pandas, matplotlib and tk, if I recall correctly, they will also install their dependencies, automatically). After installing python, just run from a shell "pip install pandas" and the same for matplotlib and tk.
- You run it from a shell like "python c2plot --help" to see the different command line options. In a nutshell if you pass one or more c2 .csv files it will show them, else it will open a file selection dialog to allow you to handpick the .csv files you want to graph. You can pass/pick one or more .csv files (2 in the example above).
- Once the graph is on you'll see:
- Three rows of plots, for "Heart Rate", "Pace" and "Stroke Rate" (I can easily add Watts and Cal/Hr but I don't see the point, maybe Watts makes sense or I can let you chose via command-line options).
- One column of plots for each interval in your workouts: in the example above I'm comparing 2 sessions, each being a 4x1000m, so you have 4 columns.
- The solid line are the actual data (either raw data, or a centred moving average to smooth things out a bit, see the command-line options for details), the dashed lines are averages over the time range currently displayed: this means that if you zoom on a part of the x axis (time), the average will change.
- You can interact with the plot with the buttons at the bottom:
- The lens icon allow to zoom (a rectangle by default, but if you press 'x' or 'y' while clicking & dragging it will only zoom in x or y axis). When you zoom in y axis, it will zoom for the entire row of plots. When you zoom in x axis, it will zoom for the entire column of plots.
- The cross icon allows to pan (when you are zoomed in) by clicking & dragging.
- The sliders icon allows to tweak some graph spacing settings.
- The disk icon is to save to an image.
- Left and Right arrows icons are sort of "Undo" & "Redo".
- The home icon resets everything.
- If you click near a data line, you'll see a tooltip with the numerical values of the selected point.
- Close the graph to go back to your shell.
- If your files are named as per concept2 convention (e.g. concept2-result-96306722.csv), it will only keep the numerical part as a label, else it will keep the entire file name (just to make the legends a bit smaller).
