Add auto minor ticks

miscplot/variability.py

@@ -9,7 +9,7 @@ import numpy
 from numpy.typing import NDArray
 import polars
 from polars import col
-from matplotlib import pyplot, gridspec
+from matplotlib import pyplot, gridspec, ticker
 from matplotlib.figure import Figure
 from matplotlib.axes import Axes
 
@@ -203,6 +203,7 @@ def variability_plot(
     ax.grid(alpha=1, which='major')
     ax.set_ylabel(data_col)
     ax.set_title(data_col)
+    ax.yaxis.set_minor_locator(ticker.AutoMinorLocator())
 
     def resize_labels(event) -> None:
         # Resize labels