[英]converting javascript function to python with comma operator
[英]Converting python callback function to javascript
我想要一些幫助,將我在bokeh中的回調函數從python轉換為javascript。 接下來顯示我的代碼(我刪除了大部分代碼,因為它對翻譯不重要。)
#returns a CDS of a dataframe based on one parameter
def create_df(option):
return ColumnDataSource(incident_df)
all_df = create_df('all')
critical_df = create_df('1')
high_df = create_df('2')
avg_low_df = create_df('3/4')
data_points = create_df('all')
color_mapper=LinearColorMapper(palette=RdBu7,low=data_points.data['freq'].min(),high=data_points.data['freq'].max())
radio_button_group = RadioButtonGroup(
labels=["All Priorities", "1 - Critical", "2 - High", "3/4 - Average/Low"], active=0)
#Define the callback function
def callback(attr, old, new):
if radio_button_group.active == 0:
new_cds = all_df
if radio_button_group.active == 1:
new_cds = critical_df
if radio_button_group.active == 2:
new_cds = high_df
if radio_button_group.active == 3:
new_cds = avg_low_df
data_points.data = new_cds.data
color_mapper.low=min(data_points.data['freq'])
color_mapper.high=max(data_points.data['freq'])
radio_button_group.on_change('active', callback)
您的Python回調可以這樣轉換為JS回調(前提是它在Python中運行):
from bokeh.models import CustomJS
code = """
if (radio_button_group.active == 0)
new_cds = all_df
if (radio_button_group.active == 1)
new_cds = critical_df
if (radio_button_group.active == 2)
new_cds = high_df
if (radio_button_group.active == 3)
new_cds = avg_low_df
data_points.data = new_cds.data
color_mapper.low = Math.min.apply(null, data_points.data['freq'])
color_mapper.high = Math.max.apply(null, data_points.data['freq'])
"""
callback = CustomJS(args = dict(data_points = data_points,
color_mapper = color_mapper
radio_button_group = radio_button_group
all_df = all_df,
critical_df = critical_df,
high_df = high_df,
avg_low_df = avg_low_df),
code = code)
radio_button_group.js_on_change('active', callback)
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