zorder is an attribute in Matplotlib that determines the drawing order of plot elements (artists). It is a floating-point number, and artists with higher zorder values are drawn on top of those with lower values.
For example:
- Images typically have a default
zorderof 0. - Patches (like rectangles or circles) have a default
zorderof 1. - Lines and markers can have higher
zordervalues assigned to them.
By adjusting the zorder, you can control which elements appear in front or behind others in your plots. This is particularly useful when you want to overlay elements, such as adding a grid behind a line plot or placing annotations above other plot elements.
