[Gate-users] Merging root files without gjm

[KB]

Hello All,

    For various reasons, gjm does not work on some root files (last
event id problems), but my problem is more than just fixing gjm. I
have a more general question.
I would like to extract some values from several root files and make a
new files. There seems to be so many trees of information in the root
file (singles, hits, positron energy, coincidences, ...) but I would
like to open the coincidences tree, extract just the energy, detection
position and the time info and write it to a root file. My other
analysis programmes hinge on reading a root file, so I would like make
a root file instead of a binary file.

    Has anyone done this? Any pointers about making a customised root
file? It seems that it may be faster to look at someone template and
write my own code than pouring through the bulky root manual.

    Thanks,

Karthik.