set format x "%d/%m/%y"
set xtics rotate
set grid
set terminal png
set xdata time
set ylabel "Active tickets"
set xlabel "\nDate"
set title "Active tickets by type over time for 2002 - now"
set timefmt "%Y-%m-%d"
set output "ticket-type-all.png"
plot [ ] [0:] "ticket-type-all.txt" using 1:2 ti "defect" with lines, \
	"ticket-type-all.txt" using 1:3 ti "enhancement" with lines, \
	"ticket-type-all.txt" using 1:4 ti "update" with lines, \
	"ticket-type-all.txt" using 1:5 ti "submission" with lines, \
	"ticket-type-all.txt" using 1:6 ti "request" with lines, \
	"ticket-type-all.txt" using 1:($2+$3+$4+$5+$6) ti "Sum" with lines