Mobius.Charts.plot

You're seeing just the function plot, go back to Mobius.Charts module for more information.
Link to this function

plot(metric_name, tags \\ %{}, opts \\ [])

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Specs

plot(binary(), map(), [plot_opt()]) :: :ok

Plot the metric name to the screen

If there are tags for the metric you can pass those in the second argument:

Mobius.Charts.plot("vm.memory.total", %{some: :tag})

Optionally you can pass in a resolution to see the metrics recorded over time specified by the resolution.

Mobius.Charts.plot("vm.memory.total", %{}, resolution: :hour)

By default the resolution is :minute, which will display the metrics over the last minute.