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I'm trying to plot a line (named upvol) for volume over the last 20
days where the price of the stock has increase and the same (named
downvol) where the price has decreased.
If during the last 20 days, the price increased 6 times, upvol should
only have the sum of the 6 up days and downvol should have the sum of
the 14 down days.
My end goal is to see what the line looks like if I plot (totalvol -
upvol)/totalvol, and the same for downvol.
How do I keep the sum within a 20 day period so it does not keep
accumulating the total volume?
I realize this might be a fruitless endeavor, but I'm interested in
see what it looks like.
Thanks
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