txt += """
open_file_graph("%s", width = 400, height = 400)
plot(tot[,1], log = 'xy', xlab='log(rangs)', ylab = 'log(frequences)', col = 'red', pch=16)
dev.off()
txt += """
open_file_graph("%s", width = 400, height = 400)
plot(tot[,1], log = 'xy', xlab='log(rangs)', ylab = 'log(frequences)', col = 'red', pch=16)
dev.off()