6

编辑：请注意以下示例代码的语法已过时，来自非常早期的 Bokeh 版本。

如何定义用于标记所有内容的字体？我只知道如何更改标题、标记和轴的字体，但如何更改图例的字体？

这是一个用于测试更改的运行示例。

from bokeh.plotting import *
from bokeh.sampledata import periodic_table
import pandas as pd

elements = periodic_table.elements
elements = elements[elements['atomic number'] <= 82]
elements = elements[~pd.isnull(elements['melting point'])]
mass = [float(x.strip('[]')) for x in elements['atomic mass']]
elements['atomic mass'] = mass

palette = list(reversed([
    '#67001f','#b2182b','#d6604d','#f4a582','#fddbc7','#f7f7f7','#d1e5f0','#92c5de','#4393c3','#2166ac','#053061'
]))

melting_points = elements['melting point']
low = min(melting_points)
high= max(melting_points)
melting_point_inds = [int(10*(x-low)/(high-low)) for x in melting_points] #gives items in colors a value from 0-10
meltingpointcolors = [palette[i] for i in melting_point_inds]

output_file("elements.html", title="elements.py example")

hold()

circle(elements['atomic mass'], elements['density'] ,
       color=meltingpointcolors, plot_width=1200, line_color='black',fill_alpha=0.8,
       size=12, title='Density vs Atomic Weight of Elements (colored by melting point)', legend="circle",
       title_text_font="times", background_fill= '#cccccc', tools='pan, wheel_zoom, box_zoom, reset')

text(elements['atomic mass'], elements['density'] +0.3,
    text=elements['symbol'],angle=0, text_color='#333333',
    text_align="center", text_font_size="10pt", text_font="times")

xaxis().axis_label='atomic weight (amu)'
yaxis().axis_label='density (g/cm^3)'
grid().grid_line_color='white'
axis().axis_label_text_font="times"
show()
4

4 回答 4

6

您需要获取Legend当前绘图的对象，这可以使用legend绘图属性完成，然后设置label_text_font属性：

plot.legend.label_text_font = "times"

请注意，这些属性名称在不久的将来可能会缩短/简化。

于 2014-07-10T01:33:41.917 回答
6

我尝试了建议：

p.legend().label_text_font = "times"

但我得到一个错误：

TypeError: '_list_attr_splat' object is not callable

但是当我省略括号时它工作正常：

p.legend.label_text_font = "times"

如果 label_text_font 不是您想要的，您通常可以通过引发超级有用的错误消息来获取图例的可用属性列表或另一个“list_attr_splat”对象： 

p.legend.blah = "foo"

AttributeError: unexpected attribute 'blah' to Legend, 
possible attributes are border_line_alpha, border_line_cap,
border_line_color, border_line_dash, border_line_dash_offset, 
border_line_join, border_line_width, glyph_height, glyph_width,
label_height, label_standoff, label_text_align, label_text_alpha,
label_text_baseline, label_text_color, label_text_font,
label_text_font_size, label_text_font_style, label_width, 
legend_padding, legend_spacing, legends, name, orientation, 
plot, session or tags
于 2015-04-17T16:42:15.003 回答
4

对于那些在搜索“如何将图例移动到另一个角落？”时到达此页面的人的额外信息：

legend().orientation = "top_left"

可接受的术语top_left,top_right和.bottom_leftbottom_right

于 2014-11-03T08:53:52.577 回答
-1

try this:

p.legend.orientation = "horizontal"
于 2020-09-22T02:11:34.740 回答