我无法弄清楚如何在plot.ly气泡图中标记特定的气泡。我想要某些"异常值"气泡将文本写入气泡内而不是通过悬停文本。
我们说我有这些数据:
import plotly.plotly as py
import plotly.graph_objs as go
trace0 = go.Scatter(
x=[1, 2, 3, 4],
y=[10, 11, 12, 13],
mode='markers',
marker=dict(
size=[40, 60, 80, 100],
)
)
data = [trace0]
py.iplot(data, filename='bubblechart-size')
我只想在与(1,10)和(4,13)对应的气泡上添加文字标记。此外,是否可以控制文本标记的位置?
答案 0 :(得分:3)
您可以使用annotations实现此目的。
这允许您在图表上写下您想要的任何文本并将其引用到您的数据中。您还可以使用位置锚点或通过在x和y数据之上应用其他计算来控制文本的显示位置。例如:
x_data = [1, 2, 3, 4]
y_data = [10, 11, 12, 13]
z_data = [40, 60, 80, 100]
annotations = [
dict(
x=x,
y=y,
text='' if 4 > x > 1 else z, # Some conditional to define outliers
showarrow=False,
xanchor='center', # Position of text relative to x axis (left/right/center)
yanchor='middle', # Position of text relative to y axis (top/bottom/middle)
) for x, y, z in zip(x_data, y_data, z_data)
]
trace0 = go.Scatter(
x=x_data,
y=y_data,
mode='markers',
marker=dict(
size=z_data,
)
)
data = [trace0]
layout = go.Layout(annotations=annotations)
py.iplot(go.Figure(data=data, layout=layout), filename='bubblechart-size')
修改强>
如果使用袖扣,则可以稍微调整以上内容:
bubbles_to_annotate = df[(df['avg_pos'] < 2) | (df['avg_pos'] > 3)] # Some conditional to define outliers
annotations = [
dict(
x=row['avg_pos'],
y=row['avg_neg'],
text=row['subreddit'],
showarrow=False,
xanchor='center', # Position of text relative to x axis (left/right/center)
yanchor='middle', # Position of text relative to y axis (top/bottom/middle)
) for _, row in bubbles_to_annotate.iterrows()
]
df.iplot(kind='bubble', x='avg_pos', y='avg_neg', size='counts',
text='subreddit', xTitle='Average Negative Sentiment',
yTitle='Average Positive Sentiment', annotations=annotations,
filename='simple-bubble-chart')
由于需要条件参数,因此仍需要定义注释。然后通过annotations
直接将其传递给袖扣。