Click here to see the SAS code.
Click here to see the example.

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In SAS/Graph, you can't get a true numeric axis for a gchart bar chart,
so I'm doing the chart using gplot, and I'm "faking" bars by using
line segments with the interpol=needle.   Being able to do true numeric
axes is especially important for the laboratory A chart (not shown in
this example) since it appears to use a log axis.

Drawbacks: needles are one color (can't do fill color & outline),
and since a needle is a line segment you can't do html charttip/drilldown
on it.

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