convert input to string
use the first argv as the input file
bug fix - mod title was called only when no bin width used
draw a plot - use a file with a format:
#figname jet spectrum
#file /path/to/input1.root
#name hjaktR04;anti-kt from 1;L P
#file /path/to/input2.root
#name hjaktR04;anti-kt from 2;L P
#xtitle p_{T}
#ytitle counts
#x -20 30
#normalize self width update
#normalize 1e13
##this is a comment
#min 0.1
#max 10
#min 1e-6
#x 0 100
#logy
#endfig
##note: the last settings are taken
##single text file can have more figures
useful command line for making projections of a 2d histogram from a file