advanced settings - DaveL17/matplotlib GitHub Wiki

If enabled, this setting will allow you to plot custom lines on charts at user-specified values and with user-defined colors. This feature is useful if you want to add a freeze warning line to a weather chart, for example. Custom line segments are not available until this setting is enabled.

If enabled, chart ranges will be expanded to display custom line segments at all times. If disabled, custom line segments will only be displayed if they are within range of plotted data. Adds controls to plot user-defined line segments. If later disabled, previously defined segments will be ignored (the settings will be retained and hidden). If selected, the chart's Y axis will be expanded to ensure that the custom value is always visible.

For a clean look, the plugin default is to plot "invisible" origin lines when charts contain both positive and negative values. Enable this setting to force origin lines to be displayed. If selected, the chart's Y origin line will be displayed when charted values include both positive and negative values. Otherwise, no line will be plotted for the X axis at Y = 0.