Bokeh 简明教程

Bokeh - Customising legends

图中的各种字形可以通过在默认情况下显示为图区右上角标签的图例属性来识别。可以通过以下属性自定义此图例：

Various glyphs in a plot can be identified by legend property appear as a label by default at top-right position of the plot area. This legend can be customised by following attributes −

1

legend.label_text_font

change default label font to specified font name

2

legend.label_text_font_size

font size in points

3

legend.location

set the label at specified location.

4

legend.title

set title for legend label

5

legend.orientation

set to horizontal (default) or vertical

6

legend.clicking_policy

Example

图例自定义的示例代码如下：

Example code for legend customisation is as follows −

from bokeh.plotting import figure, output_file, show
import math
x2 = list(range(1,11))
y4 = [math.pow(i,2) for i in x2]
y2 = [math.log10(pow(10,i)) for i in x2]
fig = figure(y_axis_type = 'log')
fig.circle(x2, y2,size = 5, color = 'blue', legend = 'blue circle')
fig.line(x2,y4, line_width = 2, line_color = 'red', legend = 'red line')
fig.legend.location = 'top_left'
fig.legend.title = 'Legend Title'
fig.legend.title_text_font = 'Arial'
fig.legend.title_text_font_size = '20pt'
show(fig)

Output

customising legends