Click here to see the SAS code.
Click here to see the example.
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SAS/Graph version of chart on p. 1141 of Science magazine, 17nov2006
(using estimated values)
From the text in the magazine...
"Scrunching occurs in abortive initiation. Single-molecule time traces
and transition-amplitude histograms for RPo (0NTPs) and RPitc,<=8 (ATP+UTP)
at the N25 promoter. Data for positively and negatively supercoiled DNA are
at the top and bottom, respectively. Green points, raw data (30 frames
per s); red points, averaged data (1-s window)."
SAS/Graph tricks used:
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The hardest part here was "faking" the plausibly-real data. I used
a data step with a loop, and the sas rannor() function, and then
applied some programmatical munging to the values.
I point the major & minor tickmarks in towards the graph using a
negative height in the axis statement. I get the axis on the right-hand
side using the 'plot2' statement.
I use the new v9.2 'frontref' option to bring the reference line to the
front of the graph, so it's not obscured by the data points.
And, I suppress a few of the major tickmark labels by specifically
making the axis value for that t= tickmark blank, such as value=(t=1 '').
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