The VROC is the Volume Rate Of Change.
VROC = ((Volume(i) * 100) / Volume(i-n)) - 100
The standard VROC is equal to Finance::GeniusTrader::Indicators::ROC->new([12], "VOLUME", $GET_VOLUME)
Finance::GeniusTrader::Indicators::VROC->new() Finance::GeniusTrader::Indicators::VROC->new([20])
To install Finance::GeniusTrader, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Finance::GeniusTrader
CPAN shell
perl -MCPAN -e shell install Finance::GeniusTrader
For more information on module installation, please visit the detailed CPAN module installation guide.