Plotly中的Bar Charts

发表于2021-05-22更新于2021-05-22字数统计551阅读时长6分

条形图

效果

Bar

代码

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import plotly.express as px
data_canada = px.data.gapminder().query("country == 'Canada'")
fig = px.bar(data_canada, x='year', y='pop')
fig.show()

长格式数据

效果

Format

代码

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import plotly.express as px

long_df = px.data.medals_long()

fig = px.bar(long_df, x="nation", y="count", color="medal", title="Long-Form Input")
fig.show()

多面子图

效果

Facetted

代码

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import plotly.express as px
df = px.data.tips()
fig = px.bar(df, x="sex", y="total_bill", color="smoker", barmode="group",
             facet_row="time", facet_col="day",
             category_orders={"day": ["Thur", "Fri", "Sat", "Sun"],
                              "time": ["Lunch", "Dinner"]})
fig.show()

其中，barmode="group"防止堆叠，category_orders定义了行列

自定义单个条形颜色

效果

Customizing

代码

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import plotly.graph_objects as go

colors = ['lightslategray',] * 5
colors[1] = 'crimson'

fig = go.Figure(data=[go.Bar(
    x=['Feature A', 'Feature B', 'Feature C',
       'Feature D', 'Feature E'],
    y=[20, 14, 23, 25, 22],
    marker_color=colors # marker color can be a single color value or an iterable
)])
fig.update_layout(title_text='Least Used Feature')
fig.show()

自定义宽度

效果

width

代码

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import plotly.graph_objects as go

fig = go.Figure(data=[go.Bar(
    x=[1, 2, 3, 5.5, 10],
    y=[10, 8, 6, 4, 2],
    width=[0.8, 0.8, 0.8, 3.5, 4] # customize width here
)])

fig.show()

自定义基点

效果

base

代码

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import plotly.graph_objects as go

years = ['2016', '2017', '2018']

fig = go.Figure()
fig.add_trace(go.Bar(x=years, y=[500, 600, 700],
                     base=[-500, -600, -700],
                     marker_color='crimson',
                     name='expenses'))
fig.add_trace(go.Bar(x=years, y=[300, 400, 700],
                     base=0,
                     marker_color='lightslategrey',
                     name='revenue'
                     ))

fig.show()

自定义间距

效果

Gaps

代码

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import plotly.graph_objects as go

years = [1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
         2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012]

fig = go.Figure()
fig.add_trace(go.Bar(x=years,
                     y=[219, 146, 112, 127, 124, 180, 236, 207, 236, 263,
                        350, 430, 474, 526, 488, 537, 500, 439],
                     name='Rest of world',
                     marker_color='rgb(55, 83, 109)'
                     ))
fig.add_trace(go.Bar(x=years,
                     y=[16, 13, 10, 11, 28, 37, 43, 55, 56, 88, 105, 156, 270,
                        299, 340, 403, 549, 499],
                     name='China',
                     marker_color='rgb(26, 118, 255)'
                     ))

fig.update_layout(
    title='US Export of Plastic Scrap',
    xaxis_tickfont_size=14,
    yaxis=dict(
        title='USD (millions)',
        titlefont_size=16,
        tickfont_size=14,
    ),
    legend=dict(
        x=0,
        y=1.0,
        bgcolor='rgba(255, 255, 255, 0)',
        bordercolor='rgba(255, 255, 255, 0)'
    ),
    barmode='group',
    bargap=0.15,  # gap between bars of adjacent location coordinates.
    bargroupgap=0.1  # gap between bars of the same location coordinate.
)
fig.show()

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