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[英]How do I change the colors of the graph using dash plotly in python
[英]How to randomly select colors in plotly python graph
我有以下数据列表:
date = ['2019-01-01', '2019-01-18', '2019-02-03']
value1 = [6798.0, 436.0, 348.0]
value2 = [500.0, 455.0, 348.0]
从这些列表中,我使用 plotly 库生成了一个折线图,如下所示:
trace_1 = go.Scatter(x = date,
y = value1,
mode = 'markers+lines',
marker_color='rgb(152, 0, .8)',
name = '1')
trace_2 = go.Scatter(x = date,
y = value2,
mode = 'markers+lines',
marker_color='rgb(0, 0, .8)',
name = '2')
data_total = [trace_1, trace_2]
fig = go.Figure(data=data_total, layout=layout)
py.iplot(fig)
图形运行良好,线条颜色不同。 但是,我希望随机自动生成线条颜色,而不是像我那样手动生成。
按照本教程: https : //www.kite.com/python/answers/how-to-generate-random-colors-in-matplotlib-in-python
我试图做:
colors = np.random.rand(1,3)
trace_1 = go.Scatter(x = date,
y = value1,
mode = 'markers+lines',
marker_color = colors,
name = '1')
trace_2 = go.Scatter(x = date,
y = value2,
mode = 'markers+lines',
marker_color = colors,
name = '2')
data_total = [trace_1, trace_2]
fig = go.Figure(data=data_total, layout=layout)
py.iplot(fig)
但是这段代码不起作用。
您应该只需要注释掉marker_color
。 许多绘图库(包括plotly
)倾向于自动分配颜色。
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