Plotly log 刻度显示完整的刻度值

Question

考虑 the code in the example 即

import plotly.express as px
df = px.data.gapminder().query("year == 2007")

fig = px.scatter(df, x="gdpPercap", y="lifeExp", hover_name="country", log_x=True)
fig.show()

并生产

x轴上的刻度是否可能显示2000、20k等而不是2，[=15也是如此=], 4 ... ?

Answer 1

• 你可以使用https://plotly.com/python/tick-formatting/#tickmode--array
• 下面的例子考虑到它是几何的，并且只需要轴上的一位有效数字 How to round a number to significant figures in Python

import plotly.express as px
import numpy as np
import pandas as pd

df = px.data.gapminder().query("year == 2007")

fig = px.scatter(df, x="gdpPercap", y="lifeExp", hover_name="country", log_x=True)
fig.update_layout(
    xaxis={
        "tickmode": "array",
        "tickvals": pd.to_numeric(
            [f"{n:.1g}" for n in np.geomspace(1, df["gdpPercap"].max(), 15)]
        ),
    }
)