Now that we've broken down how data points are graphed horizontally in time, let's take a look at how they are graphed vertically on their Y axes. I'm sure whole chapters have been devoted to documenting all the ways the Y axes has been used and abused, from using a logarithmic scale instead of linear or vice versa to improper scale to truncation, but space doesn't permit going into all these issues.
Like any tool, we can abuse the flexibility of Grafana's Y-axes display. In this section, we're going to point out the opportunities for leveraging the Y-axes display to hopefully clarify or illuminate our data. We'll be creating a series of panels depicting various weather observations and then concentrating on different ways to adjust the Y axes, including scaling, units, and the use of multiple Y axes on a single graph.
Setting axis units
Let's start out by creating a new dashboard panel by...