在来自ColumnDataSource的颜色和来自映射器的颜色之间切换

from bokeh.plotting import figure, show, output_file
from bokeh.models import ColumnDataSource

# 假设这是你的数据
data = {
    'x': [1, 2, 3, 4, 5],
    'y': [6, 7, 2, 4, 5],
    'colors': ['#FF0000', '#00FF00', '#0000FF', '#FFFF00', '#00FFFF']
}

# 创建 ColumnDataSource
source = ColumnDataSource(data)

# 创建图表
p = figure(title="Color from ColumnDataSource")
p.circle('x', 'y', size=20, color='colors', source=source)

# 显示图表
output_file("color_from_cds.html")
show(p)

from bokeh.plotting import figure, show, output_file
from bokeh.models import ColumnDataSource, CategoricalColorMapper

# 假设这是你的数据
data = {
    'x': [1, 2, 3, 4, 5],
    'y': [6, 7, 2, 4, 5],
    'categories': ['A', 'B', 'A', 'C', 'B']
}

# 创建 ColumnDataSource
source = ColumnDataSource(data)

# 创建颜色映射器
color_mapper = CategoricalColorMapper(factors=['A', 'B', 'C'], palette=['#FF0000', '#00FF00', '#0000FF'])

# 创建图表
p = figure(title="Color from Mapper")
p.circle('x', 'y', size=20, color={'field': 'categories', 'transform': color_mapper}, source=source)

# 显示图表
output_file("color_from_mapper.html")
show(p)