将标签添加到散景图

Question

我有一个数据框,其中包含有玩家姓名和统计数据的列.我绘制了两个不同的统计数据,希望玩家名称出现在散点图上的每个点下面.

这是我到目前为止所做的,但它不起作用.对于文本,我假设这是我想要在图上每个点下面的名称列表,源是名称来自的位置.

p = Scatter(dt,x='off_rating',y='def_rating',title="Offensive vs. Defensive Eff",color="navy")
labels = LabelSet(x='off_rating',y='def_rating',text="player_name",source=dt)
p.add_layout(labels)

Answer 1

你走在正确的道路上.但是,sourcefor LabelSet必须是DataSource.这是一个示例代码.

from bokeh.plotting import show, ColumnDataSource
from bokeh.charts import Scatter
from bokeh.models import LabelSet
from pandas.core.frame import DataFrame

source = DataFrame(
    dict(
        off_rating=[66, 71, 72, 68, 58, 62],
        def_rating=[165, 189, 220, 141, 260, 174],
        names=['Mark', 'Amir', 'Matt', 'Greg', 'Owen', 'Juan']
    )
)


scatter_plot = Scatter(
                source,
                x='off_rating',
                y='def_rating',
                title='Offensive vs. Defensive Eff',
                color='navy')

labels = LabelSet(
            x='off_rating',
            y='def_rating',
            text='names',
            level='glyph',
            x_offset=5, 
            y_offset=5, 
            source=ColumnDataSource(source), 
            render_mode='canvas')

scatter_plot.add_layout(labels)

show(scatter_plot)