Add minor grid lines python. grid() in Matplotlib to enhance your visualizations. Aug 4, 2024 ยท Matplotlib allows you to add both major and minor grid lines to your plots. You can use the axis parameter in the grid() function to specify which grid lines to display. Legal values are: 'x', 'y', and 'both'. The gotcha with minor grids is that you have to have minor tick marks turned on too. Therefore, to set grid zorder, use set_axisbelow or, for more control, call the set_zorder method of each axis. Add grid lines to a matplotlib chart with the grid function, both major and minor grids and learn how to customize the properties of the grid and how to set custom grid locations. With Pyplot, you can use the grid() function to add grid lines to the plot. minorticks_on(). Default value is 'both'.