散景饼图/甜甜圈图上的奇怪标签

问题描述 投票:0回答:1

我正在关注此问题的答复:Adding labels in pie chart wedge in bokeh

我正在尝试向我的散景图添加标签,以便用户可以看到数据值。由于某种原因,图表的呈现方式如下:

“饼图”

我不确定为什么会这样。我尝试注释掉z变量,以查看这是否有所不同。

这是我的代码:

import os
import pandas as pd
import pyodbc
from bokeh.plotting import figure, show
from bokeh.io import export_png
from bokeh.models import LabelSet, ColumnDataSource
from bokeh.palettes import Category20
import matplotlib as plt
from math import pi
from bokeh.transform import cumsum

lst = ['On_Time', 'All'] 

lst2 = [8, 85] 

df = pd.DataFrame(list(zip(lst, lst2)), 
               columns =['Column', 'Value']) 
df 

df['angle'] = df['value']/df['value'].sum() * 2*pi
df['angle']

df['color'] = ['#084594', '#2171b5']

#z=110*(df['value']/df['value'].sum())
#df['value']=z
#df

p = figure(plot_height=350, title="", toolbar_location=None,
           tools="", x_range=(-.5, .5))

p.annular_wedge(x=0, y=1,  inner_radius=0.15, outer_radius=0.25, direction="anticlock",
                start_angle=cumsum('angle', include_zero=True), end_angle=cumsum('angle'),
        line_color="white", fill_color='color', legend='column', source=df)

df["value"] = df['value'].astype(str)
df["value"] = df["value"].str.pad(35, side = "left")
source = ColumnDataSource(df)

labels = LabelSet(x=0, y=1, text='value', level='glyph',
        angle=cumsum('angle', include_zero=True), source=source, render_mode='canvas')

p.add_layout(labels)

p.axis.axis_label=None
p.axis.visible=False
p.grid.grid_line_color = None

show(p)
python pandas bokeh
1个回答
0
投票

标签位于下方,因为您已设置

level='glyph'

LabelSet的呼叫中。通常没有太多的理由来干扰默认渲染级别。如果删除此标签,则标签将以“ LabelSet”之类的注释显示在“顶部”。

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