Python 当我使用 Plotly 单击标记的图例时，我可以使箭头消失吗

发布于03月24日

import plotly.graph_objects as go
fig = go.Figure()
x = np.array([0,1,2,3])
x_s = np.array([0,1,2,3])
y = np.array([1,1,2,3])
y_s = np.array([0,0,0,0])
fig.add_trace(go.Scatter(
  x=x_s,
  y=y_s,
  name='Test',
  marker=dict(
    size=10,
    cmax=1,
    cmin=0,
    color='black',
    colorscale="Rainbow_r",
    symbol='circle'
    # line=dict(color=line_colors, width=3)
  ),
  showlegend=True,
  hoverinfo='text',
  hoverlabel=dict(bgcolor="white", font_color="black"),
  mode='markers',
  textposition="top center"))
fig.add_annotation(
  x=0,
  y=1,
  ax=0,
  ay=0,
  xref='x',
  yref='y',
  axref='x',
  ayref='y',
  text='xxxx',
  showarrow=True,
  arrowhead=3,
  arrowsize=1,
  arrowwidth=1,
  arrowcolor='black'
)

此代码生成以下图表:

有没有可能这样做，当你点击标记的图例时，箭头就会随之消失？

阅读https://plotly.com/python/text-and-annotations/和https://plotly.com/python/legend/.

推荐答案

这可以通过在同一图例组中设置箭头和文本批注来实现.组名将散布、箭头和注释放在相同的组名中.

import plotly.graph_objects as go
import numpy as np

fig = go.Figure()

x = np.array([0,1,2,3])
x_s = np.array([0,1,2,3])
y = np.array([1,1,2,3])
y_s = np.array([0,0,0,0])

fig.add_trace(go.Scatter(
    x=x_s,
    y=y_s,
    name='Test',
    marker=dict(
        size=10,
        cmax=1,
        cmin=0,
        color='black',
        colorscale="Rainbow_r",
        symbol='circle'
        # line=dict(color=line_colors, width=3)
    ),
    showlegend=True,
    hoverinfo='text',
    hoverlabel=dict(bgcolor="white", font_color="black"),
    mode='markers',
    textposition="top center",
    legendgroup='001'
))

fig.add_trace(go.Scatter(x=[0,0],
                         y=[0,1],
                         #text='xxxx',
                         marker=dict(
                             size=10,
                             symbol='arrow-bar-up',
                             angleref='previous'
                         ),
                         #textposition='bottom center',
                         line_color='black',
                         legendgroup='001',
                         showlegend=False
                        ))

fig.add_trace(go.Scatter(mode='text',
                         x=[0,0],
                         y=[0,0],
                         text='xxxx',
                         textposition='bottom center',
                         legendgroup='001',
                         showlegend=False
                        ))

fig.show()