Plotly Express 绘图教程

Plotly Express 简介

Plotly Express 是一个新的高级 Python 可视化库：它是 Plotly.py 的高级封装，它为复杂的图表提供了一个简单的语法。
参考官方文档

散点图

1	import plotly.express as px

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iris = px.data.iris()
fig = px.scatter(iris, x='sepal_length', y='sepal_width')
fig.show()

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fig = px.scatter(iris, x='sepal_length', y='sepal_width', color='species',
                 marginal_x='histogram', marginal_y='box', trendline='ols')
fig.show()

iris['error'] = iris['sepal_width']/100.00
fig = px.scatter(iris, x='sepal_length', y='sepal_width', color='species',
                 marginal_x='histogram', marginal_y='box', trendline='ols', error_x='error', error_y='error')
fig.show()

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tips = px.data.tips()
fig = px.scatter(tips, x="total_bill", y="tip", facet_row="time", facet_col="day", color="smoker", trendline="ols", category_orders={"day": ["Thur", "Fri", "Sat", "Sun"], "time": ["Lunch", "Dinner"]})
fig.show()

1 2	fig = px.scatter_matrix(iris, dimensions=["sepal_width", "sepal_length", "petal_width", "petal_length"], color="species") fig.show()

gapminder = px.data.gapminder()
fig = px.scatter(gapminder.query('year==2007'), x='gdpPercap', y='lifeExp', size='pop', color='continent', hover_name='country', log_x=True, size_max=60)
# gapminder[gapminder['year']==2007]
fig.show()

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fig = px.scatter(gapminder, x="gdpPercap", y="lifeExp", animation_frame="year", animation_group="country", size="pop", color="continent", hover_name="country", facet_col="continent", log_x=True, size_max=45, range_x=[100,100000], range_y=[25,90])

fig.show()

线图

iris = px.data.iris()
fig = px.density_contour(iris, x='sepal_width', y='sepal_length', color='species', marginal_x='histogram', marginal_y='box')

fig.show()

1 2	fig = px.density_heatmap(iris, x='sepal_width', y='sepal_length') fig.show()

直方图/条形图

1 2	fig = px.bar(iris, x='sepal_width', y='sepal_length', color='species') fig.show()

1 2	fig = px.histogram(iris, x='sepal_width', y='sepal_length', color='species') fig.show()

3D

election = px.data.election()
fig = px.scatter_3d(election, x="Joly", y="Coderre", z="Bergeron", color="winner", size="total", hover_name="district",
                  symbol="result", color_discrete_map = {"Joly": "blue", "Bergeron": "green", "Coderre":"red"})
fig.show()

三元坐标系

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election = px.data.election()
fig = px.scatter_ternary(election, a="Joly", b="Coderre", c="Bergeron", color="winner", size="total", hover_name="district", size_max=15, color_discrete_map = {"Joly": "blue", "Bergeron": "green", "Coderre":"red"} )
fig.show()

地图

注：需要使用mapbox token。

px.set_mapbox_access_token("xxx")
carshare = px.data.carshare()
fig = px.scatter_mapbox(carshare, lat="centroid_lat", lon="centroid_lon", color="peak_hour", size="car_hours",             color_continuous_scale=px.colors.cyclical.IceFire, size_max=15, zoom=10)
fig.show()

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gapminder = px.data.gapminder()
fig = px.scatter_geo(gapminder, locations="iso_alpha", color="continent", hover_name="country", size="pop", animation_frame="year", projection="natural earth")
fig.show()

1 2	fig = px.choropleth(gapminder, locations="iso_alpha", color="lifeExp", hover_name="country", animation_frame="year", range_color=[20,80]) fig.show()