How to find Up-Down Volume Ratio

[fxshrat]

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@patelgopesh

So far I tried to code something like this which is improper syntax as Volume is not a function:

upvol = Sum( V(C>Ref(C,-1), 50);
downvol = Sum( V(C<Ref(C,-1), 50);
udratio = upvol/downvol;

Just use

up = ROC(C,1)>0;
dn = NOT up;
upvol = Sum(up*V,50);
downvol = Sum(dn*V,50);
udratio = upvol/downvol;