在参数化类中使用param时，获取其他(非默认)窗口小部件(holoviz param面板) [英] Get a different (non default) widget when using param in parameterized class (holoviz param panel)

问题描述

我使用参数化的类来构建我的Panel仪表板.

I use a parameterized class to build my Panel dashboard.

我想使用 CrossSelector ，但这当查看Param库提供的选项时，似乎没有选择器.它似乎只有一个 ListSelector .

I would like to use a CrossSelector but this selector does not seem to be available when looking at the options that library Param gives. It only seems to have a ListSelector.

如何使用Param获得此CrossSelector?

How do i get this CrossSelector using Param?

import param
import panel as pn

pn.extension()

class ValveExplorer(param.Parameterized):

    selected_features = param.ListSelector(
        default=[1, 3],
        objects=[1, 2, 3, 4],
    )

valve_explorer = ValveExplorer()  

# show list selector
pn.Row(valve_explorer.param['selected_features'])

这将导致以下默认ListSelector，但我不希望出现此情况.我想改为使用CrossSelector:

This results in the following default ListSelector but I don't want this one. I would like to get a CrossSelector instead:

推荐答案

Param为每个选择器都有一个默认的小部件，但是您可以更改它.

Param has a default widget for every Selector, but you can change this.

您可以使用 pn.Param():

pn.Row(pn.Param(
    valve_explorer.param['selected_features'], 
    widgets={'selected_features': pn.widgets.CrossSelector}
))

在SO上找到的类似解决方案正在使用pn.panel():

A similar solution found on SO is using pn.panel():

pn.Row(pn.panel(
    valve_explorer.param['selected_features'], 
    widgets={'selected_features': pn.widgets.CrossSelector}
))

在此处查看有关将Param与Panel一起使用的更多文档:
https://panel.pyviz.org/user_guide/Param.html

See more documentation on using Param with Panel here:
https://panel.pyviz.org/user_guide/Param.html

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