有什么方法可以使 Plotly 散点图具有平滑的线条连接点？

Question

我想使用类似 Plotly Scatter to plot my data, but I want to make the lines smooth. The only place I could think to look is at the Mode 参数的东西。

如果我想要一个平滑的图，我是否需要注入数据来平滑它？

Answer 1

您可以在跟踪对象中使用 'smoothing' 选项。此选项取值介于 0 和 1.3 之间，您必须确保将 'shape' 设置为 'spline':

smoothTrace = {'type' : 'scatter', 'mode' : 'lines', 
'x' : [1,2,3,4,5], 'y' : [4, 6, 2, 7, 8], 'line': {'shape': 'spline', 'smoothing': 1.3}}

plotly.offline.iplot([smoothTrace])

我发现此选项提供的平滑量最多可以忽略不计。我使用 SciPy 库中的 Savitzy-Golay 过滤器取得了更大的成功。您不需要设置 'shape' 或 'smoothing' 选项；过滤器对值本身起作用：

evenSmootherTrace =  {'type' : 'scatter', 'mode' : 'lines', 
'x' : scipy.signal.savgol_filter([1,2,3,4,5], 51, 3), 
'y' : [4, 6, 2, 7, 8]}

plotly.offline.iplot([evenSmootherTrace])

希望对您有所帮助！

Answer 2

https://plotly.com/python/line-charts/

import plotly.graph_objects as go
import numpy as np

x = np.array([1, 2, 3, 4, 5])
y = np.array([1, 3, 2, 3, 1])

fig = go.Figure()

fig.add_trace(go.Scatter(x=x, y=y + 5, name="spline",
                    text=["tweak line smoothness<br>with 'smoothing' in line object"],
                    hoverinfo='text+name',
                    line_shape='spline'))

有什么方法可以使 Plotly 散点图具有平滑的线条连接点？

Is there any way to make a Plotly scatter have smooth lines connecting points?

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