Automatically Add Reference Lines to Graph Builder

SpannerHead — Mon, 04 May 2026 19:32:21 GMT

I have a graph created by graph builder and a column in the data contains a constant value that I'd like to automatically add as a reference line to the graph. Adding the column to the plot axis gives me something (green vertical below) but it's not great looking, any better ideas?

Re: Automatically Add Reference Lines to Graph Builder

txnelson — Mon, 04 May 2026 21:00:06 GMT

Here is a simple example that draws a reference line based upon the value of row 1 from column Weight


Graph Builder(
	Variables( X( :weight ), Y( :height ) ),
	Elements( Points( X, Y, Legend( 6 ) ), Smoother( X, Y, Legend( 7 ) ) ),
	SendToReport(
		Dispatch( {}, {:weight}, ScaleBox,
			{Add Ref Line( 95, "Solid", "Red", "", 1 )}
		),
		Dispatch( {}, "Graph Builder", FrameBox,
			{Add Graphics Script(
				2,
				Description( "" ),
				rp = Current Report();
				rp[axis box( 1 )] << add ref line( :weight[1], "solid", red );
			)}
		)
	)
);

I produced the complete JSL by right clicking on the graph and selecting Customize. Then clicking on the "+" and writing the simple script

rp=current report();
rp[axis box(1)] << add ref line(:weight[1],"solid",red)

After applying the little script, I went back to the red triangle in the graph, and saved the script to a script window.

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Automatically Add Reference Lines to Graph Builder

Re: Automatically Add Reference Lines to Graph Builder