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.TH trainfo
.SH NAME
.B trainfo - write meta-information for a trajectory file
.SH SYNOPSIS
.B trainfo 
.I trafile 
[
.I option
].
.SH DESCRIPTION
Write meta-information for a trajectory file 
.I trafile
to screen. If no option is given, all meta-information is written, otherwise the specific piece of information is passed with 
.I option.
.SH PARAMETERS
.TP 5
.I trafile 
name of the input trajectory file 
.SH OPTIONAL ARGUMENTS
.TP 5
.B - dim 
dimensions of the trajectory file: #tra, #ntimes, #ncolumns.
.TP 5 
.B - ntra
number of trajectories.
.TP 5
.B - ntim
number of times.
.TP 5
.B - ncol
number of columns (including time, longitude, latitude, pressure). 
.TP 5
.B - vars
list of field names (columns) on the trajectory file.
.TP 5
.B - refdate 
reference date in format (YYYYMMDD_HHMM). 
.TP 5
.B - times
list of times (relative to the referencec date). Times are given in format: HH.MM.
.TP 5
.B - startdate
starting date for the trajectory calculation (in format YYYYMMD_HHMM).
.TP 5
.B - enddate
end date for the trajectory calculation (in format YYYYMMD_HHMM).
.TP 5
.B - timerange 
time range (in minutes) of the trajectories.
.TP 5
.B - list
list all trajectories.
.SH EXAMPLES
.TP 5
.B [1] trainfo file dim
Given a trajectory file with name "file", write the three dimensions of the file to screen. The dimensions are: number of trajectories, number of times and number of columns.
.SH AUTHOR
Written by Michael Sprenger and Heini Wernli (January 2011)