Looking at the source code of the function diagwl() (which is used to
produce that one), the "shading" appears to be drawn using the function
segments(). Basically, the difference d between both lines is calculated,
and then the shading is done by using different lty and col when d is
positive or n
The last sentence should read:
Due to the 20 or so times the lines cross each other I wasn't sure how to
modify the last example in ?polygon
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Forum,
I have two time series that I plot up using the data/code below. The x-axis
shows weekly time step starting on 6/3/1999 (SP=10) and ending on
10/25/2007 (SP=448). I'm trying to shade between the two lines in a similar
fashion as the graph found here:
http://addictedtor.free.fr/graphiq
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