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Help with "recession bar" graph

• To: mathgroup at smc.vnet.net
• Subject: [mg45945] Help with "recession bar" graph
• From: Mark Coleman <mark at markscoleman.com>
• Date: Fri, 30 Jan 2004 04:16:24 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

I was wondering if someone might assist me in the construction of a 
"recession bar" graph.  This type of graph is often used in economics 
to depict interesting sub-periods on a time series graph. .For this 
type of graph, the user would specify one or more intervals of 
interest. Each interval would be depicted by a shaded vertical column, 
the width of which spans the regions of interest (image a series of 
possibly irregularly spaced vertical grid lines, with shading in 
between). For an example, see 
http://www.cepr.org/data/eurocoin/recession/

I've been trying to figure out a way to get gridlines to do this in 
LIstPlot. Any ideas?

Thanks,

Mark