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Re: perl netCDF problem: reading character variables
- Subject: Re: perl netCDF problem: reading character variables
- Date: Mon, 19 Jul 1999 15:02:02 -0600
Bill,
>Date: Mon, 19 Jul 1999 19:55:37 GMT
>From: "William C. Mattison" <address@hidden>
>Organization: NOAA/NWS
>To: address@hidden
>Subject: perl netCDF problem.
>Keywords: 199907191509.JAA17058
In the above message, you wrote:
> Thank-you for the fix. The backslash worked.
Great!
> Now I have another problem:
> the imap calling argument in the NetCDF::vargetg call. I'm trying to get
> a single string out of an array of a few thousand 5-character strings. The
> variable $report_number is the row of the array I want to get. What should
> $imap[0] and $imap[1] be?
>
> Bill.
I doubt that you need NetCDF::vargetg() because you're not doing
anything weird with the indexes (e.g. transposition); consequently,
NetCDF::varget() should suffice. Try something like this:
@stationNameArray = ("\0" x $maxStaNamLen);
@start = ($report_number, 0);
@count = (1, $maxStaNamLen)
NetCDF::varget($ncid, $varid, \@start, \@count, \@stationNameArray);
$stationName = "";
for ($j = 0; $j < $maxStaNamLen; $j++) {
$chr = chr($stationNameArray[$j]);
last if( $chr eq "\0" || $chr eq "\\" ) ;
$stationName .= $chr ;
}
Note that NetCDF::varget() returns strings as arrays of characters---so
they have to be reformed back into strings.
--------
Steve Emmerson <http://www.unidata.ucar.edu>
