在 Plotly 图中将背景颜色设置为透明

Question

我的Python代码创建了一个绘图条形图，但背景是白色的。我想把它变成透明颜色。这样可行吗？

我的代码：

import plotly.plotly as py
from plotly.graph_objs import *
py.sign_in('username', 'api_key')
data = Data([
Bar(
    x=['Sivaranjani S', 'Vijayalakshmi C', 'Rajeshwari S', 'Shanthi Priscilla', 'Pandiyaraj G', 'Kamatchi S', 'MohanaPriya', 'Madhumitha G', 'Franklin Alphones Raj J', 'Akfaris Almaas', 'Biswajit Champati', 'Priya R', 'Rekha Rajasekaran', 'Sarath Kumar B', 'Jegan L', 'Karthick A', 'Mahalakshmi S', 'Ragunathan V', 'Anu S', 'Ramkumar KS', 'Uthra R'],
    y=[1640, 1394, 1390, 1313, 2166, 1521, 1078, 1543, 780, 1202, 1505, 2028, 2032, 1769, 1238, 1491, 1477, 1329, 2038, 1339, 1458],
    text=['Scuti', 'Scuti', 'Cygni', 'Scorpii', 'Scuti', 'Pollux', 'Scorpii', 'Pollux', 'Scuti', 'Pollux', 'Scorpii', 'Scorpii', 'Scuti', 'Cygni', 'Scorpii', 'Scuti', 'Scuti', 'Pollux', 'Scuti', 'Pollux', 'Pollux'])])
plot_url = py.plot(data)

图表如下所示：

Answer 1

对于完全透明的绘图，请确保指定纸张背景颜色和绘图的：

import plotly.plotly as py
from plotly.graph_objs import *
py.sign_in('', '')
data = Data([
    Bar(
        x=['Sivaranjani S', 'Vijayalakshmi C', 'Rajeshwari S', 'Shanthi Priscilla', 'Pandiyaraj G', 'Kamatchi S', 'MohanaPriya', 'Madhumitha G', 'Franklin Alphones Raj J', 'Akfaris Almaas', 'Biswajit Champati', 'Priya R', 'Rekha Rajasekaran', 'Sarath Kumar B', 'Jegan L', 'Karthick A', 'Mahalakshmi S', 'Ragunathan V', 'Anu S', 'Ramkumar KS', 'Uthra R'],
        y=[1640, 1394, 1390, 1313, 2166, 1521, 1078, 1543, 780, 1202, 1505, 2028, 2032, 1769, 1238, 1491, 1477, 1329, 2038, 1339, 1458],
        text=['Scuti', 'Scuti', 'Cygni', 'Scorpii', 'Scuti', 'Pollux', 'Scorpii', 'Pollux', 'Scuti', 'Pollux', 'Scorpii', 'Scorpii', 'Scuti', 'Cygni', 'Scorpii', 'Scuti', 'Scuti', 'Pollux', 'Scuti', 'Pollux', 'Pollux']
    )
])

layout = Layout(
    paper_bgcolor='rgba(0,0,0,0)',
    plot_bgcolor='rgba(0,0,0,0)'
)

fig = Figure(data=data, layout=layout)

plot_url = py.plot(fig, filename='transparent-background')

Answer 2

您可以使用布局来更改其颜色，并根据您的需要设置参数

bgcolour

和

opacity

。你可以这样做：

data = Data([Bar(... The same you already have...)])

layout = Layout(
    title='Your Title',
    (xaxis, yaxis, WHAT EVER YOU WANT TO SET)

    paper_bgcolor='rgb(233,233,233)', # set the background colour

)
fig = Figure(data=data, layout=layout)
py.plot(fig)

您可以在这里找到一些示例

Answer 3

将透明设置应用到现有 Plotly 图形的最简单方法是：

fig.update_layout(
    {
        "paper_bgcolor": "rgba(0, 0, 0, 0)",
        "plot_bgcolor": "rgba(0, 0, 0, 0)",
    }
)