[gradsusr] sdfopen limitations in opengrads

[James T. Potemra]

Hi Arlindo:

Just wanted to confirm OpenGrADS 2.0.a8.oga.1, linux-build i686, can 
handle these
netcdf files via OPeNDAP.  Thanks for the fix,

Jim

Arlindo da Silva wrote:
>
>
> On Fri, Aug 6, 2010 at 5:43 PM, James T. Potemra <jimp at hawaii.edu 
> <mailto:jimp at hawaii.edu>> wrote:
>
>
>     Hi Arlindo:
>
>     In May of 2009 I posted a message about getting errors while
>     attempting
>     to read netcdf files served via OPeNDAP in opengrads.  At the
>     time, the
>     suspected problem was a title that exceeded 256 characters.  I would
>     like to refresh this issue now, since I seem to encounter it more
>     often
>     (and it's not always because of the title).
>
>     For example, the NOAA NDBC is serving data on their OPeNDAP server
>     (e.g., http://sdf.ndbc.noaa.gov/thredds/dodsC/hfradar_ushi_1km).
>      I can
>     access these data using many versions of grads, e.g., gradsdods
>     (1.9.0-rc1), gradsdap (2.0.a5, 2.0.a6) and grads (2.0.a8).  However,
>     both grads-2.0.a5.oga.5 and grads-2.0.a7.oga.2 give the following
>     error
>     (and exit thereafter).  Just hoping that between the netcdf
>     implementation in grads and opengrads this can be fixed in a future
>     release.  Thanks,
>
>
>  Have you tried the latest OpenGrADS 2.0.a8.oga.1? We have updated 
> NetCDF to the latest v4.1, which now bundles its own opendap 
> implementation. I just tried the URL above and it works fine on Mac OS 
> X (the machine where I am logged on right now). The problem you are 
> referring to was a bug in an early version of NetCDF-4 which relied on 
> an external opendap implementation. The issue appeared to have been 
> resolved.
>
>    Arlindo
>
>
> -- 
> Arlindo da Silva
> dasilva at alum.mit.edu <mailto:dasilva at alum.mit.edu>
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>
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