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Re: ppl aline with a time axis
Hello Arindam -
This is always a bit tricky. What you need to do is
make your plot, then find out the time axis limits:
yes? PPL LIST TAXIS
The output will be something like:
yes? PPL LIST TAXIS
TAXIS QUALITIES
LO= 8.73E+03 DT= 6.00E+01 CSIZE= 1.00E-01 TYPE= TAXIS3 VANG= 0.00E+00
TOP AXIS= ON BOTTOM AXIS= ON
TMIN=19910801000000 0:00 AUG 1,1991
TMAX=20010101000000 0:00 JAN 1,2001
TSTART=19900802071254 7:12 AUG 2,1990
NMTC= -1 LABEL= -3 IFDB= 3 ISDB= 1 TAXIS= XAXIS IAUTOT= ON
Note the value of TSTART, which is typically one year before the
start of the data. Then define the time values (x-values) of your
line relative to TSTART, in hours:
yes? PPL ALINE,2,`365*24*2`,-1,`365*24*4`,-1
which will draw a line at y-value=-1, extending from 2 years after
TSTART to 4 years after TSTART.
Billy K
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