如何设置线条颜色

问题描述 投票:0回答:5

如何在

plotly
中设置线条的颜色?

import plotly.graph_objects as go
from plotly.subplots import make_subplots


fig = make_subplots(rows=2, cols=1, subplot_titles=('Plot 1', 'Plot 2'))

# plot the first line of the first plot
fig.append_trace(go.Scatter(x=self.x_axis_pd, y=self.y_1, mode='lines+markers', name='line#1'), row=1, col=1)  # this line should be #ffe476

我试过

fillcolor
但我怀疑它不起作用,因为这是一条简单的线。

python python-3.x plotly plotly-python
5个回答
56
投票

您可以在

line=dict(color="#ffe476")
通话中添加
go.Scatter(...)
。文档在这里:https://plot.ly/python/reference/#scatter-line-color


39
投票

@nicolaskruchten 当然是对的,但我想提出另外两个选择:

line_color="#0000ff"

和:

 fig['data'][0]['line']['color']="#00ff00"

或:

 fig.data[0].line.color = "#00ff00"

我特别欣赏后一个选项的灵活性,因为它可以让您轻松地为所需的线条设置新颜色您使用例如

fig.append_trace(go.Scatter())
fig = go.Figure(data=go.Scatter))
构建图形之后。下面是使用所有三个选项的示例。

代码1:

import plotly.graph_objects as go
import numpy as np

t = np.linspace(0, 10, 100)
y = np.cos(t)
y2= np.sin(t)
fig = go.Figure(data=go.Scatter(x=t, y=y,mode='lines+markers', line_color='#ffe476'))
fig.add_trace(go.Scatter(x=t, y=y2,mode='lines+markers', line=dict(color="#0000ff")))
fig.show()

情节1:

现在,如果您将下面的代码片段插入新单元格并运行它,您可以直接更改颜色。

代码2:

fig['data'][0]['line']['color']="#00ff00"
fig.show()

情节2:


4
投票
fig.add_trace(
                go.Scatter(
                    x=list(dict_val['yolo_timecost'].keys()),
                    y=signal.savgol_filter(list(dict_val['yolo_timecost'].values()),2653,3),
                    mode='lines',
                    name='YOLOv3实时耗时',
                    line=dict(
                        color='rgb(204, 204, 204)',
                        width=5
                    ),
                    ),
                )

2
投票
fig.data[0].line.color = 'rgb(204, 20, 204)'

2
投票

你可以像那样使用 color_discrete_sequence

import plotly.express as px
df = px.data.gapminder().query("country=='Canada'")
fig = px.line(df, x="year", y="lifeExp", title='Life expectancy in Canada',color_discrete_sequence=["#ff97ff"])
fig.show()
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