Date labels missing

[nprihodko]

After updating plotnine from 0.12.4 to 0.13.5 (this also triggers mizani update from 0.9.3 to 0.11.2) date labels stopped working.

Seems like it breaks when there are more than 3 observations (but maybe there are also other conditions).

All good:

import pandas as pd
from plotnine import *


plot_df = pd.DataFrame(
    {
        "x": ["2023-01-01", "2023-02-01", "2023-03-01"],
        "y": [1, 2, 3],
    }
)
plot_df["x"] = pd.to_datetime(plot_df["x"])
ggplot(plot_df, aes(x="x", y="y")) + geom_point()

But if I add one more row, date axis breaks:

plot_df = pd.DataFrame(
    {
        "x": ["2023-01-01", "2023-02-01", "2023-03-01", "2023-04-01"],
        "y": [1, 2, 3, 4],
    }
)
plot_df["x"] = pd.to_datetime(plot_df["x"])
ggplot(plot_df, aes(x="x", y="y")) + geom_point()

Adding scale_x_datetime() or scale_x_date() explicitly does not affect anything.

[has2k1]

Fix have been released in mizani v0.11.3.