If you go to where ever arviz is installed and go to subfolder
“/arviz/plots” and grep for yaxis you will see that the following function exists
def format_axes():
ax.yaxis.set_ticks([])
ax.spines["top"].set_visible(False)
ax.spines["right"].set_visible(False)
ax.spines["left"].set_visible(False)
ax.spines["bottom"].set_visible(True)
ax.xaxis.set_ticks_position("bottom")
ax.tick_params(
axis="x", direction="out", width=1, length=3, color="0.5", labelsize=xt_labelsize
)
ax.spines["bottom"].set_color("0.5")
inside ./backends/matplotlib/posteriorplot.py
There does not seem to be any option to turn this off (atleast non that I could see with a quick look, but if there is, this would be the correct place to search for it). You can either add an extra option your self to posterior plot or comment these parts out (if you are using matplotlib) which produces plots like
