[ncl-talk] set_date_time

[Marston Johnston]

It seems like you choose a fairly complicated way to solve the problem.

May I suggest reading in the MAIACTAOT.h00v02.*.nc files in chronological order and then writing new netcdf files in ncl where you can create a time array with the correct dtg.

It’s fairly quick and easy in ncl.

I’ve had such problems before and found it easiest to with the above method.

 

Hope this helps,

/M

 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Marston S. Ward, PhD

Department of Earth Sciences

University of Gothenburg, Sweden

Email: marston.johnston at gu.se

SkypeID: marston.johnston 

Phone: +46-31-7864901 

Only the fruitful thing is true!

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

 

From: ncl-talk <ncl-talk-bounces at ucar.edu> on behalf of Kunal Bali <kunal.bali9 at gmail.com>
Date: Thursday, 5 October 2017 at 20:40
To: "ncl-talk at ucar.edu" <ncl-talk at ucar.edu>
Subject: [ncl-talk] set_date_time

 

Dear NCL users,

 

I have one question regarding date-time setting from filename. This question is not actually related to NCL, sorry in advance. 

 

I have 4 .nc files named given below. The time is not created in these files during conversion from hdf to netcdf in NCL. 

 

MAIACTAOT.h00v02.20003640715.nc   --> 2000=year, 364=day, 07=hr, 15=min

MAIACTAOT.h00v02.20003650620.nc

MAIACTAOT.h00v02.20003660525.nc

MAIACTAOT.h00v02.20003660700.nc

 

So, I did try to create the date-time with shell scripting (given below)

but it is creating wrong date as the files are of December month, but it is generating January month date also. I don't know why. 

 

2000-01-01 05:25:00

2000-01-01 07:00:00

2000-12-30 07:15:00

2000-12-31 06:20:00

 

 

the shell script, which I am using

 

#######################################

 

for n in  MAIACTAOT.h00v02.20*.nc;do

 ls $n > text

export xx=`cut -c18-28 text`

export YYYY=`cut -c18-21 text`

export JJJ=`cut -c22-24 text`

export HH=`cut -c25-26 text`

export MM=`cut -c27-28 text`

mm=`date -d "$JJJ days $YYYY-01-01" +"%m"`

dd=`date -d "$JJJ days $YYYY-01-01" +"%d"`

mydate=${YYYY}-${mm}-${dd},${HH}:${MM}:00

echo $mydate

 

echo "cdo settaxis,$mydate $n re$n"

cdo settaxis,$mydate $n re$n

 

done

 

cdo mergetime reMAI*.nc final.nc

exit

#################################

 

 

Any suggestion regarding this issue would be very helpful.

 

Thank You


Kunal Bali

 

 

 

 

 

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