为什么我的图表不是每个月都显示？ Facetgrid，Seaborn

Question

我的样本数据集如下：

dataset = {
    "ClientId": [
        10, 20, 20, 20, 10, 5, 3, 7, 5, 20, 12, 5, 
        3, 20, 5, 8, 10, 9, 7, 20, 21, 5, 3, 10,
    ],
    "Year": [
        2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019,
        2019, 2019, 2019, 2019, 2020, 2020, 2020, 2020,
        2020, 2020, 2020, 2020, 2020, 2020, 2020, 2020,
    ],
    "Month": [
        "Jan", "Feb", "Mar", "Apr", "Mai", "Jun", "Jul", "Aug", 
        "Sep", "Oct", "Nov", "Dec", "Jan", "Feb", "Mar", "Apr", 
        "Mai", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
    ],
    "Sector": [
        "A", "B", "C", "A", "B", "C", "A", "B", "C", "A", "B", "C", 
        "A", "B", "C", "A", "B", "C", "A", "B", "C", "A", "B", "C",
    ],
    "Quantity": [
        100, 50, 25, 30, 40, 50, 200, 600, 20, 40, 100, 20, 50, 
        400, 250, 300, 125, 75, 90, 10, 225, 550, 450, 55,     
    ],     
    "Regions": [
        "Europe", "Asia", "Africa", "Africa", "Other", "Asia", 
        "Africa", "Other", "America", "America", "Europe", 
        "Europe", "Other", "Europe", "Asia", "Africa", "Asia", 
        "Europe", "Other", "Africa", "Europe", "Asia", "Africa", 
        "Europe",
    ],
}
df = pd.DataFrame(data=dataset)

我想为每个年份和部门制作一个 Facetgrid 条形图。我已经成功地创建了情节：

g = sns.FacetGrid(df, col='Year', row='Sector', margin_titles=True)
g.map_dataframe(sns.barplot, x='Month', y='Quantity', color='orange')
g.set_axis_labels('Months','Quantity')

问题： 条形图不是每个月都显示，只有几个。我想要的是每月看到一个小节，但我被卡住了。

图表目前看起来像这样：

Answer 1

您可以通过向 map_dataframe 提供列 order 来强制 seaborn 使用所有列：

g = sns.FacetGrid(df, col="Year", row="Sector", margin_titles=True)
g.map_dataframe(
    sns.barplot, x="Month", y="Quantity", color="orange", order=df["Month"].unique()
)
g.set_axis_labels("Months", "Quantity")
g.set_xticklabels(rotation=90)

或者，我认为更好的选择是像这样使用 sns.catplot。这仍然是 returns 一个 facetgrid，但不需要额外的调整。

g = sns.catplot(
    x="Month",
    y="Quantity",
    col="Year",
    row="Sector",
    data=df,
    kind="bar",
    height=2.5,
    aspect=0.8,
    color="orange",
    margin_titles=True,
)
g.set_xticklabels(rotation=90)

产生：

为什么我的图表不是每个月都显示？ Facetgrid，Seaborn

Why is my graph not showing every Month? Facetgrid, Seaborn

python

matplotlib

seaborn

facet-grid