Question

我正在尝试创建一个滑块，该滑块使用Python 3和Plotly控制两条轨迹。我正在使用Spyder，尽管我也尝试过为Jupyter修改相同的代码，但未成功。

这是代码示例：

import numpy as np
#import pandas as pd
#import matplotlib.pyplot as plt

import plotly as py
import plotly.graph_objs as go
#import ipywidgets as widgets

py.offline.init_notebook_mode(connected=True) 



'''
Plot traces
'''
trace1 = [dict(
        type = 'scatter',
        visible = False,
        name='Demand',
        x = np.arange(0,365,1),
        y = np.sin(step*np.arange(0,365,1))) for step in range(0,365,1)]


trace2 = [dict(
        type = 'scatter',
        visible = False,
        name='Demand',
        x = np.arange(0,365,1),
        y = np.sin(step*np.arange(0,365,1)) + 5) for step in range(0,365,1)]


#data = trace2

data = [list(a) for a in zip(trace1, trace2)]


steps = []
for i in range(len(data)):
    step = dict(
        method = 'restyle',  
        args = ['visible', [False] * len(data)],
        label = ""
    )
    step['args'][1][i] = True # Toggle i'th trace to "visible"
    steps.append(step)

sliders = [dict(
    active = 10,#What's happening here?
    currentvalue = {"prefix": "Day: "}, #????
    #pad = {"t": 50},
    steps = steps
)]

#Add styling
layout = go.Layout(sliders=sliders,
    title='Sample slider plot',
    xaxis=dict(
        title=‘Test’,
        titlefont=dict(
            family='Courier New, monospace',
            size=18,
            color='#7f7f7f'
        )
    ),
    yaxis=dict(
        title=‘Unit’,
        titlefont=dict(
            family='Courier New, monospace',
            size=18,
            color='#7f7f7f'
        )
    )
)


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

py.offline.plot(fig, filename='Test3')

如果我分别绘制任何一条迹线，即

data = trace1

有效。但是，一旦我合并了trace1和trace2，即

data = [list(a) for a in zip(trace1, trace2)]

我收到以下错误：

The 'data' property is a tuple of trace instances
    that may be specified as:
      - A list or tuple of trace instances
        (e.g. [Scatter(...), Bar(...)])
      - A list or tuple of dicts of string/value properties where:
        - The 'type' property specifies the trace type
            One of: ['area', 'bar', 'barpolar', 'box',
                     'candlestick', 'carpet', 'choropleth', 'cone',
                     'contour', 'contourcarpet', 'heatmap',
                     'heatmapgl', 'histogram', 'histogram2d',
                     'histogram2dcontour', 'mesh3d', 'ohlc',
                     'parcats', 'parcoords', 'pie', 'pointcloud',
                     'sankey', 'scatter', 'scatter3d',
                     'scattercarpet', 'scattergeo', 'scattergl',
                     'scattermapbox', 'scatterpolar',
                     'scatterpolargl', 'scatterternary', 'splom',
                     'streamtube', 'surface', 'table', 'violin']

        - All remaining properties are passed to the constructor of
          the specified trace type

        (e.g. [{'type': 'scatter', ...}, {'type': 'bar, ...}])

检查类型（trace1）显示每个跟踪是365个dict对象的列表，这些对象可以进行处理。但是，如上所述，一旦将迹线合并到“数据”对象中，就会得到列表列表，而列表列表是不可以的。

所以我的问题是：如何将trace1和trace2组合成一个对象，该对象的长度适合滑块的步长（即365），并且可以处理-诸如字典或跟踪实例列表，而不是列表列表？

我看过plotly - multiple traces using a shared slider variable和Plot.ly. Using slider control with multiple plots。不幸的是没有成功。如果跟踪对象是字典，则第一个链接有效，但是如果必须将其括在方括号中以列出“ for”循环，则该链接无效。第二个链接仅添加trace1 + trace2来创建索引长度为730的对象-也就是说，它连续地将两条迹线连接在一起，而不是将它们一起显示。

非常感谢您的帮助！

使用一个滑块在多个位置上绘制多条迹线

0 个答案: