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[netCDF #ZPG-755636]: Reading and extracting WRF time characters using C++ interface

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  • Subject: [netCDF #ZPG-755636]: Reading and extracting WRF time characters using C++ interface
  • Date: Tue, 04 Dec 2012 14:28:34 -0700
Hi Scott,

> Email Address: address@hidden
> Organization: UCLA
> Package Version:
> Operating System: Linux
>
> I am trying to read in a Time variable (character) output by WRF using
> the C++/netCDF interface.  What is the proper way to do this?
> 
> This works:
> char timein[NTIM][19];
> if (!timVar->get(&timein[0][0], NTIM))
> return NC_ERR;
> 
> Then, I simply want to extract the year, mo, day and hour into separate
> integer or string variables.  How can I do this?
> 
> Here is the ncdump -h output:
> 
> dimensions:
> Time = UNLIMITED ; // (48 currently)
> DateStrLen = 19 ;
> west_east = 195 ;
> south_north = 126 ;
> variables:
> char Times(Time, DateStrLen) ;
> 
> and, some examples:
> Time[0] DateStrLen[0] Times[0--18]='2012-12-01_12:00:00'
> Time[1] DateStrLen[0] Times[19--37]='2012-12-01_13:00:00'
> Time[2] DateStrLen[0] Times[38--56]='2012-12-01_14:00:00'
> Time[3] DateStrLen[0] Times[57--75]='2012-12-01_15:00:00'
> Time[4] DateStrLen[0] Times[76--94]='2012-12-01_16:00:00'

Sorry, the netCDF library doesn't have any general string-parsing functions.
These date-time strings are all fixed length, so I would think you could
do what you want by just indexing into the string and using a library
function such as strncpy() from the C libraries or whatever the equivalent
is for C++.

--Russ


Russ Rew                                         UCAR Unidata Program
address@hidden                      http://www.unidata.ucar.edu



Ticket Details
===================
Ticket ID: ZPG-755636
Department: Support netCDF
Priority: Normal
Status: Closed