| Re: netCDF - char attributes [message #15387] |
Mon, 17 May 1999 00:00 |
R.Bauer
Messages: 1424
Registered: November 1998
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Senior Member |
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Martin Schultz wrote:
> Hi again,
>
> Liam has prompted me to take a look into netCDF, and I must say, it's
> easier than I thought.
> (So far) I just got one question: If I store a string attribute (e.g.
> units), IDL's
> NCDF_AttPut routine internally converts it to BYTE no mater whether I
> set the /CHAR flag or not. In the example that they provide, they force
> the output to be a string saying one would need to do this to convert
> from BYTE. But does this mean that the CHAR type is not supported? Or am
> I missing something here?
>
Hi Martin,
I believe the /CHAR type isn't supported as CHAR only as BYTE.
We have a lot of experience with Fortran and C netCDF. All are using BYTE.
This means if you will write a parameter as string you have to define 2
Dimensions.
(string_length X n_elements()).
You should have a look at the unidata netCDF homepage because IDL has only
Version netCDF 2.4.
http://www.unidata.ucar.edu
The actualy version is 3.4. If you don't use netCDF 3.4 patches you will got in
trouble reading not
alphanumerical signs like -()+*. and so on in the shortname. netCDF 2.4 is able
to write those.
We have already done a lot of definitions for describing a dataset with netCDF
Attributes.
regards
Rei
P.S
Hallo Martin,
netCDF gef�llt mir ziemlich gut und in dem netCDF Forum wurde auch schon mal eine
komprimierende Version diskutiert.
>
> Thanks,
> Martin.
>
> --
>
> |||||||||||||||\\\\\\\\\\\\\-------------------///////////// //|||||||||||||||
> Martin Schultz, DEAS, Harvard University, 29 Oxford St., Pierce 109,
> Cambridge, MA 02138 phone (617) 496 8318 fax (617) 495 4551
> e-mail mgs@io.harvard.edu web http://www-as/people/staff/mgs/
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