# # Very simple Gantt Chart # Demonstrate using timecolumn(N,format) to plot time data from # multiple columns # $DATA << EOD #Task start end A 2012-11-01 2012-12-31 B 2013-01-01 2013-03-14 C 2013-03-15 2014-04-30 D 2013-05-01 2013-06-30 E 2013-07-01 2013-08-31 F1 2013-09-01 2013-10-31 F2 2013-09-01 2014-01-17 F3 2013-09-01 2014-01-30 F4 2013-09-01 2014-03-31 G1 2013-11-01 2013-11-27 G2 2013-11-01 2014-01-17 L 2013-11-28 2013-12-19 M 2013-11-28 2014-01-17 N 2013-12-04 2014-03-02 O 2013-12-20 2014-01-17 P 2013-12-20 2014-02-16 Q 2014-01-05 2014-01-13 R 2014-01-18 2014-01-30 S 2014-01-31 2014-03-31 T 2014-03-01 2014-04-28 EOD set xdata time timeformat = "%Y-%m-%d" set format x "%b\n'%y" set yrange [-1:] OneMonth = strptime("%m","2") set xtics OneMonth nomirror set xtics scale 2, 0.5 set mxtics 4 set ytics nomirror set grid x y unset key set title "{/=15 Simple Gantt Chart}\n\n{/:Bold Task start and end times in columns 2 and 3}" set border 3 T(N) = timecolumn(N,timeformat) set style arrow 1 filled size screen 0.02, 15 fixed lt 3 lw 1.5 plot $DATA using (T(2)) : ($0) : (T(3)-T(2)) : (0.0) : yticlabel(1) with vector as 1, \ $DATA using (T(2)) : ($0) : 1 with labels right offset -2 pause -1 "Hit return to check backwards compatibility with v4 syntax" set timefmt timeformat plot $DATA using (timecolumn(2)) : ($0) : (T(3)-T(2)) : (0.0) : yticlabel(1) with vector as 1, \ $DATA using 2 : ($0) : 1 with labels right offset -2 pause -1 "Hit return to continue" reset