问题描述
我的数据框看起来与此类似:
>>>Hour Level value
0 7 H 1.435
1 7 M 3.124
2 7 L 5.578
3 8 H 0.435
4 8 M 2.124
5 8 L 4.578
我想以“级别”列为基础以线型创建折线图。
现在我有折线图的折线图:
import plotly.graph_objects as go
fig = px.line(group,x="Hour",y="value",color='level',title='Graph',category_orders={'level':['H','M','L']},color_discrete_map={'H':'royalblue','M':'orange','L':'firebrick'})
fig.show()
我想控制每个级别的线条样式。 直到知道我看到做到这一点的唯一方法是为每个“级别”添加,但使用add_trace的方式如下:
# Create and style traces
fig.add_trace(go.Scatter(x="Hour",name='H',line=dict(dash='dash')))
fig.add_trace(go.Scatter(x="Hour",name = 'M',line=dict(dash='dot')))
fig.show()
但我不断收到此错误:
ValueError: 散布的'x'属性收到的类型为'builtins.str'的无效值 收到的值:“小时”
The 'x' property is an array that may be specified as a tuple,list,numpy array,or pandas Series
我的最终目标是控制图表中线条的线条样式,如果我可以在“ px.line”部分中做到这一点,那就更好了
解决方法
通过数据框中的变量设置不同样式的一种方法是:
line_dash='Level'
情节
完整代码
import plotly.graph_objects as go
import pandas as pd
import numpy as np
import plotly.io as pio
import plotly.express as px
group = pd.DataFrame({'Hour': {0: 7,1: 7,2: 7,3: 8,4: 8,5: 8},'Level': {0: 'H',1: 'M',2: 'L',3: 'H',4: 'M',5: 'L'},'value': {0: 1.435,1: 3.1239999999999997,2: 5.577999999999999,3: 0.435,4: 2.124,5: 4.578}})
import plotly.graph_objects as go
fig = px.line(group,x="Hour",y="value",color='Level',title='Graph',category_orders={'Level':['H','M','L']},color_discrete_map={'H':'royalblue','M':'orange','L':'firebrick'},line_dash='Level')
fig.show()