JS2V Name
JS2V Purpose
Read a time (in "Julian seconds") vs value file.
Category
Calling Sequence
js2v, file, time, data Inputs
file = name of file containing time vs value data. in
Keyword Parameters
Outputs
time = Array of times in "Julian Seconds". out
(Seconds since 0:00 1 Jan 2000).
data = Array of values at those time. out
Common Blocks
Notes
Notes: File format: Lines starting with * or ;, and null
lines are considered comment lines and ignored.
Data lines have a date/time string followed by a value
which must be the last item on the line. Ex:
Thu Apr 1 09:32:51 1993 23.45
Date/time strings have Year, Month, Day, and time, with
the month being a name (at least the first 3 letters).
To interpolate at time t (in Jul. Sec) using these arrays:
v = interpol(data, time, t)
PLOT does not work very well with Julian Seconds.
This is an IDL limitation related to single precision.
One fix is to plot relative time: plot,ta-ta(0),va
where ta and va are time and interpolated value arrays.
Modification History
R. Sterner, 1 Apr, 1993
R. Sterner, 28 Apr, 1993 --- changed from a function to a procedure.
Copyright (C) 1993, Johns Hopkins University/Applied Physics Laboratory
This software may be used, copied, or redistributed as long as it is not
sold and this copyright notice is reproduced on each copy made. This
routine is provided as is without any express or implied warranties
whatsoever. Other limitations apply as described in the file disclaimer.txt.