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如何限制列切换器中显示的选项数量，并通过滚动访问其余选项？

当列切换器的选项太长时，图表的长度就会变长。我们如何设置列切换器，使其最初显示较少的选项，最多只显示 5 个项目？然后，用户可以根据需要向下滚动以查找更多选项。如下例所示，一次显示太多选项会拉伸整个图表。

dt = Open( "$SAMPLE_DATA/Employee Master.jmp" );

Graph Builder(
	Size( 534, 658 ),
	Show Control Panel( 0 ),
	Variables( X( :Unique Id ), Y( :Employee Id ) ),
	Elements( Points( X, Y, Legend( 3 ) ) ),
	Column Switcher(
		:Employee Id,
		{:Employee Id, :Job Code, :Position Code, :Intorg Hr, :Intorg Mgr, :Employee Name, :Address Line1,
		:Address Line2, :City, :State, :Citizenship Country, :Gender, :Gender Code, :Ethnicity Code,
		:Marital Status Code, :Minority Flag, :County, :Postal Code, :Valid From Date, :Hire Date, :Start Date,
		:Employee Number, :Birth Date, :Disability Flag, :Military Exp Date, :Minimum Amt, :Midpoint Amt,
		:Maximum Amt, :Pay Level Type, :Manager Name, :Intorg Hr1, :Mnmlev1, :Mnmlev2, :Mnmlev3, :Manager Id,
		:Job Title Txt, :Job Group Code, :Job Group Desc, :EEO Class Code, :Emp Level, :Exempt Status Code,
		:Employee Type Code, :Hours Per Week, :Employee Status Code, :Performance, :Disciplinary Action Flag,
		:FLSA Status Code, :Hourly Salary, :Monthly Salary, :Annual Salary, :Annual Salary Z, :Payroll,
		:Comratio, :Age, :Over40, :Age Range, :Yrs Of Service, :Length Of Service}
	)
);

例如，在上图中，仅显示五个项目，而其余项目则隐藏在滚动菜单下方。

自动化和脚本回复：如何限制列切换器中显示的选项数量，其余选项可通过滚动访问？

您可以使用<<设置N行

Names Default To Here(1);

dt = Open("$SAMPLE_DATA/Employee Master.jmp");

gb = dt << Graph Builder(
	Size(534, 658),
	Show Control Panel(0),
	Variables(X(:Unique Id), Y(:Employee Id)),
	Elements(Points(X, Y, Legend(3)))
);

cw = gb << Column Switcher(
	:Employee Id,
	{:Employee Id, :Job Code, :Position Code, :Intorg Hr, :Intorg Mgr, :Employee Name,
	:Address Line1, :Address Line2, :City, :State, :Citizenship Country, :Gender, :Gender Code,
	:Ethnicity Code, :Marital Status Code, :Minority Flag, :County, :Postal Code,
	:Valid From Date, :Hire Date, :Start Date, :Employee Number, :Birth Date, :Disability Flag,
	:Military Exp Date, :Minimum Amt, :Midpoint Amt, :Maximum Amt, :Pay Level Type,
	:Manager Name, :Intorg Hr1, :Mnmlev1, :Mnmlev2, :Mnmlev3, :Manager Id, :Job Title Txt,
	:Job Group Code, :Job Group Desc, :EEO Class Code, :Emp Level, :Exempt Status Code,
	:Employee Type Code, :Hours Per Week, :Employee Status Code, :Performance,
	:Disciplinary Action Flag, :FLSA Status Code, :Hourly Salary, :Monthly Salary,
	:Annual Salary, :Annual Salary Z, :Payroll, :Comratio, :Age, :Over40, :Age Range,
	:Yrs Of Service, :Length Of Service}
);

cw << Set N Lines(5);