Javascript 链接到Select小部件的Bokeh数据表
我试图创建一个Bokeh数据表,该表使用customJS回调链接到一个select小部件。其思想是,当我更改select时,数据表将更新为仅显示与所选select值对应的相关行。我的代码如下:Javascript 链接到Select小部件的Bokeh数据表,javascript,python,bokeh,Javascript,Python,Bokeh,我试图创建一个Bokeh数据表,该表使用customJS回调链接到一个select小部件。其思想是,当我更改select时,数据表将更新为仅显示与所选select值对应的相关行。我的代码如下: from bokeh.io import output_file, show from bokeh.layouts import widgetbox from bokeh.models.widgets import Select, DataTable, TableColumn from bokeh.mod
from bokeh.io import output_file, show
from bokeh.layouts import widgetbox
from bokeh.models.widgets import Select, DataTable, TableColumn
from bokeh.models.sources import ColumnDataSource, CDSView
from bokeh.models import CustomJS
output_file("CatDog.html")
select = Select(title="Animal", options=["Cat","Dog"])
source=ColumnDataSource(data=dict(Animal=["Cat","Cat","Cat","Cat","Dog","Dog","Dog","Dog",],Breed=["Siamese","Persian","Bengal","Burmese","Lab","Golden", "Poodle","Pug"]))
filteredSource = ColumnDataSource(data=dict(Animal=[],Breed=[]))
columns = [TableColumn(field="Animal",title="Animal"),TableColumn(field="Breed",title="Breed",sortable=True)]
callback = CustomJS(args=dict(source=source,filteredSource = filteredSource), code="""
var data = source.data;
var f = cb_obj.value;
var d2 = filteredSource.data;
d2['Animal']=[]
d2['Breed']=[]
for(i = 0; i < data['Animal'].length;i++){
if(data['Animal'][i]==f){
d2['Animal'].push(data['Animal'][i])
d2['Breed'].push(data['Breed'][i])
}
}
alert(d2['Breed'])
filteredSource.change.emit()
""")
select.js_on_change('value',callback)
data_table=DataTable(source=filteredSource,columns=columns )
data_table_unfiltered=DataTable(source=source,columns=columns )
show(widgetbox(data_table,select,data_table_unfiltered))
从bokeh.io导入输出文件,显示
从bokeh.layouts导入widgetbox
从bokeh.models.widgets导入选择、数据表、表列
从bokeh.models.sources导入ColumnDataSource,CDSView
从bokeh.models导入CustomJS
输出文件(“CatDog.html”)
选择=选择(title=“Animal”,options=[“猫”、“狗”])
source=ColumnDataSource(数据=dict(动物=[“猫”、“猫”、“猫”、“猫”、“狗”、“狗”、“狗”、“狗”),品种=[“暹罗人”、“波斯人”、“孟加拉人”、“缅甸人”、“实验室”、“金色”、“贵宾犬”、“哈巴狗]))
filteredSource=ColumnDataSource(数据=dict(动物=[],品种=[]))
columns=[TableColumn(field=“Animal”,title=“Animal”),TableColumn(field=“bride”,title=“bride”,sortable=True)]
callback=CustomJS(args=dict(source=source,filteredSource=filteredSource),code=“”
var数据=source.data;
var f=cb_对象值;
var d2=filteredSource.data;
d2['Animal']=[]
d2['品种]=[]
对于(i=0;i
警报会正确显示我期望的行,具体取决于选择的类别,但“filteredSource”数据表不会更新,而是保持空白。任何指导都将不胜感激 这似乎是可行的,您需要触发对数据表本身的更改。这个问题在这里之前已经被问过了: 尽管如此,将代码稍微调整到下面的位置可以解决问题(使用Bokeh0.12.14)
从bokeh.io导入输出文件,显示
从bokeh.layouts导入widgetbox
从bokeh.models.widgets导入选择、数据表、表列
从bokeh.models.sources导入ColumnDataSource,CDSView
从bokeh.models导入CustomJS
输出文件(“CatDog.html”)
选择=选择(title=“Animal”,options=[“猫”、“狗”])
source=ColumnDataSource(数据=dict(动物=[“猫”、“猫”、“猫”、“猫”、“狗”、“狗”、“狗”、“狗”),品种=[“暹罗人”、“波斯人”、“孟加拉人”、“缅甸人”、“实验室”、“金色”、“贵宾犬”、“哈巴狗]))
filteredSource=ColumnDataSource(数据=dict(动物=[],品种=[]))
columns=[TableColumn(field=“Animal”,title=“Animal”),
TableColumn(field=“bride”,title=“bride”,sortable=True)]
数据表=数据表(源=filteredSource,列=columns,宽度=800)
数据\u表\u未筛选=数据表(源=源,列=列,宽度=800)
callback=CustomJS(args=dict(source=source,
filteredSource=filteredSource,
数据表=数据表),代码为“”
var数据=source.data;
var f=cb_对象值;
var d2=filteredSource.data;
d2['Animal']=[]
d2['品种]=[]
对于(i=0;i
以下是使用CDSView、BooleanFilter更新的答案。
与Bokeh 2.2.3一起运行
from bokeh.models import CDSView, BooleanFilter
from bokeh.io import show, output_notebook
from bokeh.layouts import column
from bokeh.models.widgets import Select, DataTable, TableColumn
from bokeh.models.sources import ColumnDataSource, CDSView
from bokeh.models import CustomJS
output_notebook()
select = Select(title="Animal", options=["All","Cat","Dog"])
source=ColumnDataSource(data=dict(Animal=["Cat","Cat","Cat","Cat","Dog","Dog","Dog","Dog"],
Breed=["Siamese","Persian","Bengal","Burmese","Lab","Golden", "Poodle","Pug"]))
booleans = [True for i in source.data['Animal']]
view1 = CDSView(source=source, filters=[BooleanFilter(booleans)])
columns = [TableColumn(field="Animal", title="Animal"),
TableColumn(field="Breed", title="Breed", sortable=True)]
data_table = DataTable(source=source, columns=columns, width=800, view=view1)
callback = CustomJS(args=dict(source=source, view=view1), code="""
var data = source.data;
var f = cb_obj.value;
for(var i = 0; i < data['Animal'].length; i++){
if(data['Animal'][i] == f || f == 'All'){
view.filters[0].booleans[i] = true;
} else {
view.filters[0].booleans[i] = false;
}
}
source.change.emit();
""")
select.js_on_change('value',callback)
show(column(select, data_table))```
来自bokeh.models导入CDSView、BooleanFilter
从bokeh.io导入显示,输出
从bokeh.layouts导入列
从bokeh.models.widgets导入选择、数据表、表列
从bokeh.models.sources导入ColumnDataSource,CDSView
从bokeh.models导入CustomJS
输出_笔记本()
选择=选择(title=“Animal”,options=[“All”,“Cat”,“Dog”])
source=ColumnDataSource(数据=dict(动物=[“猫”、“猫”、“猫”、“狗”、“狗”、“狗”、“狗”],
品种=[“暹罗”、“波斯”、“孟加拉”、“缅甸”、“实验室”、“金色”、“贵宾犬”、“哈巴狗]))
布尔值=[source.data['Animal']中的i为True]
view1=CDSView(source=source,filters=[BooleanFilter(booleans)])
columns=[TableColumn(field=“Animal”,title=“Animal”),
TableColumn(field=“bride”,title=“bride”,sortable=True)]
数据表=数据表(源=源,列=列,宽度=800,视图=视图1)
callback=CustomJS(args=dict(source=source,view=view1),code=“”
var数据=source.data;
var f=cb_对象值;
对于(变量i=0;i
为冗余表示歉意!有了这些,非常感谢,这就解决了问题。
from bokeh.models import CDSView, BooleanFilter
from bokeh.io import show, output_notebook
from bokeh.layouts import column
from bokeh.models.widgets import Select, DataTable, TableColumn
from bokeh.models.sources import ColumnDataSource, CDSView
from bokeh.models import CustomJS
output_notebook()
select = Select(title="Animal", options=["All","Cat","Dog"])
source=ColumnDataSource(data=dict(Animal=["Cat","Cat","Cat","Cat","Dog","Dog","Dog","Dog"],
Breed=["Siamese","Persian","Bengal","Burmese","Lab","Golden", "Poodle","Pug"]))
booleans = [True for i in source.data['Animal']]
view1 = CDSView(source=source, filters=[BooleanFilter(booleans)])
columns = [TableColumn(field="Animal", title="Animal"),
TableColumn(field="Breed", title="Breed", sortable=True)]
data_table = DataTable(source=source, columns=columns, width=800, view=view1)
callback = CustomJS(args=dict(source=source, view=view1), code="""
var data = source.data;
var f = cb_obj.value;
for(var i = 0; i < data['Animal'].length; i++){
if(data['Animal'][i] == f || f == 'All'){
view.filters[0].booleans[i] = true;
} else {
view.filters[0].booleans[i] = false;
}
}
source.change.emit();
""")
select.js_on_change('value',callback)
show(column(select, data_table))```