如何设置绘图的背景颜色和网格线的颜色？

Question

这是我的代码：

import plotly.graph_objects as go

fig = go.Figure()
fig.add_trace(go.Bar(
    name='Group 1',
    x=['Var 1', 'Var 2', 'Var 3'], y=[3, 6, 4],
    error_y=dict(type='data', array=[1, 0.5, 1.5]),
    width=0.15
))
fig.add_trace(go.Bar(
    name='Group 2',
    x=['Var 1', 'Var 2', 'Var 3'], y=[4, 7, 3],
    error_y=dict(type='data', array=[0.5, 1, 2]),
    width=0.15
))
fig.update_layout(barmode='group')
fig.show()

输出：

我读过这篇文章，但代码似乎已贬值并且不起作用。

问题：如何设置绘图的背景颜色和网格线的颜色？

Answer 1

这应该有帮助

import plotly.graph_objects as go
from plotly.graph_objects import Layout

# Set layout with background color you want (rgba values)
# This one is for white background
layout = Layout(plot_bgcolor='rgba(0,0,0,0)')

# Use that layout here
fig = go.Figure(layout=layout)
fig.add_trace(go.Bar(
    name='Group 1',
    x=['Var 1', 'Var 2', 'Var 3'], y=[3, 6, 4],
    error_y=dict(type='data', array=[1, 0.5, 1.5]),
    width=0.15
))
fig.add_trace(go.Bar(
    name='Group 2',
    x=['Var 1', 'Var 2', 'Var 3'], y=[4, 7, 3],
    error_y=dict(type='data', array=[0.5, 1, 2]),
    width=0.15
))
fig.update_layout(barmode='group')

# Change grid color and axis colors
fig.update_xaxes(showline=True, linewidth=2, linecolor='black', gridcolor='Red')
fig.update_yaxes(showline=True, linewidth=2, linecolor='black', gridcolor='Red')
fig.show()

资料来源：

1. 网格线定制
2. 背景定制