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#
# 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
Click here for minimal script to generate this plot
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