Subversion Repositories lagranto.ecmwf

.TH timeres
.SH NAME 
.B timeres - change the time resolution of a trajectory 
.SH SYNOPSIS 
.B timeres
.I inpfile
.I outfile
.I -[h|min] value
.I [-cubic|-linear]
.SH DESCRIPTION
Change the time resolution of an input trajectory file "inpfile" through interpolation and write a new trajectory file "outfile". The new time resolution "value" is given either in hours "-h" or in minutes "-min". The interpolation is performed on the trajectory file either in linear mode ("-linear") or in cubic spline mode ("-cubic"). The default is "-cubic".
.SH PARAMETERS
.TP 15
.I inpfile
input trajectory file
.TP 15
.I outfile
output trajectory file (can be the same as inpfile).
.TP 15
.I -h value
new time resolution in hours (e.g. "-h 1").
.TP 15
.I -min value
new time resolution in minutes (e.g. "-min 15").
.TP 15
.I -linear
linear interpolation between two trajectory times; note that this mode conserves the sign between two trajectory times - possibly of important for specific humidity, relative humidity,...
.TP 15
.I -linear
subic spline interpolation between two trajectory times; note that this mode conserves can change the sign between two trajectory times!
.SH EXAMPLES
.TP 5
.B [1] timeres trafile trafile -min 15 -linear
changes the time resolution to 15 minutes, using linear interpolation, and overwrites the old trajectory file.
.SH AUTHOR
Written by Michael Sprenger and Heini Wernli (January 2011