I'm working on a project where I am using an Adafruit Feather 'Adalogger' to collect data from various sensors, over time. Relatively large amounts of datapoints- a sample rate of ~15Hz over a duration of about 8 hours, at a minimum.
The data is written in comma delimited format and imported into excel where I visualize the data as line graphs.
Excel doesn't seem well suited to handle the amount of data I'll get in a typical test. Navigating the chart and the data table is cumbersome at this scale. It's difficult to find the time (X axis) for any given data point on Y. The charts often fail to update correctly when I change the data fields I want to display.
Is there a better (preferably opensource/free) way to handle this task?