Twig library is evolution of groot, which was initially developped for small data visualization while developing data reconstruction codes, and since became very improtant part of CLAS12 online and offline software.

Some new features, requested by users, required fresh look at the library structure, and new iteration was born with better implementation of graphics components, making it easier to implement new data visualization plot styles.

We start from file that constains events each presented in two lines

awk '{print $2,$5,$6,$7}' extractedDataPred2.txt > epip_hb.txt

this command takes two lines from the input and joins them into one line

paste - - < epip_hb.txt > epip_hb_joined.txt

The distribution of current package containing twig package can be obtained here:

https://userweb.jlab.org/~gavalian/software/j4np/

The latest j4np package should be used.